ACE/MAG Release Notes: The following are cummulative release notes for the ACE Magnetic Field Instrument (MAG) Level-2 datasets. As new datasets are released or old datasets are processed, this file will be updated. ------------------------------------------------------------------- August 10, 1998: Release of DOY 1 -- 120 of 1998, Version 1 of MAG Level-2 data in RTN coordinates. Each data file contains documentation of maneuver times, field components in RTN, |B|, latitude and longitude, and RMS values of underlying high-resolution measurements. Data are 16-second averages of the vector measurements. The datafiles are processed based on daily files of Level-1 data. Bad or missing data is filled with -999.9, except at beginning or end of day when data is not supplied. Time tags are approximate and good to better than 16 seconds. ACE frame counts are exact and mark the beginning of the data averaging interval. Use of single initial zeroes file for all of 120 day interval. Results good to 1/3 nT. Final alignment of sensors not yet performed, but correction expected to be smaller than above. Release of daily graphics files included at same time. Release of revised Level-2 data anticipated shortly. ------------------------------------------------------------------- March 5, 1999 Release of DOY 121 -- 300 of 1998, Version 1 of MAG Level-2 data in RTN coordinates. Formats for data files are the same as before, except that headers are extended to include maneuver times, spacecraft location at beginning and end of the interval, and spacecraft attitude at same times. Release of daily graphics files included at same time. Graphics revised to include above additional header material. Two days (DOY 263 and DOY 278) remain suspect with possibly analysis issues for Range-0 (low |B|) data. Further analysis of these days is ongoing. A revision of 1998 (Version 2) will be filed at a later date. -------------------------------------------------------------------- August 10, 1999 Release of DOY 301 -- 365 of 1998, Version 1 of MAG Level-2 data in RTN coordinates. Formats for data files are unchanged. Release of daily graphics files included at same time. -------------------------------------------------------------------- August 12, 1999 Release of DOY 1 -- 30 of 1999, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily graphics files at same time. Data and plot formats are unchanged. --------------------------------------------------------------------- September 29, 1999 Release of DOY 31 -- 109 of 1999, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily graphics files at same time. --------------------------------------------------------------------- October 18, 1999 Release of DOY 152 -- 265 of 1999, Version 1 of MAG Level-2 data in RTN coordinates. Release of this data interval is out of sequence with previous release in order for ACE to support Cassini flyby of Earth. Release of daily graphics files at same time. --------------------------------------------------------------------- October 21, 1999 Release of DOY 110 -- 151 of 1999, Version 1 of MAG Level-2 data in RTN coordinates. Release of this data interval brings MAG release to DOY 265 of 1999. Release of daily graphics files at same time. --------------------------------------------------------------------- December 10, 1999 Two problems (one real and one potential) have come to the attention of the ACE/MAG team and must be acknowledged for the sake of those using MAG data. 1) Although the ground processing software (Level-2, Browse, and RTSW codes) was designed to use -999.9 as badpoint values so that "0" values should never appear in the dataset, it is now known that Level-2 data does possess some frames with these values. They appear in 1/2 major frame subsets and the source is not yet known. 2) The sunpulse anomaly of June 1999 may result in minor errors in the spin period, which can result in spin tones and errors in despun coordinate systems (RTN, GSE, etc.). If so, the errors will be small. The dates and times for when this anomaly may influence the data are from 13:50 June 5 until 16:00 June 12. --------------------------------------------------------------------- March 1, 2000 Release of DOY 266 of 1999 -- DOY 57 of 2000, Version 1 of MAG Level-2 data in RTN coordinates. Release of this data interval brings MAG release to DOY 057 of 2000. Release of daily graphics files at same time. Source of |B|=0 values not yet determined, but such values should be searched for in any analysis and the points treated as bad values. --------------------------------------------------------------------- June 23, 2000 Release of DOY 58 of 2000 -- DOY 169 of 2000, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily graphics files at same time. --------------------------------------------------------------------- October 13, 2000 Release of DOY 170 of 2000 -- DOY 271 of 2000, Version 1 of MAG Level-2 data in RTN coordinates. Apparently unphysical RMS signatures during maneuver of DOY 230 that do not show up as shifts in mean field. Source not known at present. There continue to be intervals (generally short lasting a few hours to a day) when the apparent zero level of the combined spacecraft + instrument signal abruptly changes by < 0.5 nT (usually). Since the shift sometimes occurs primarily along the spin axis of the spacecraft, we are not confident that we always resolve these events and the user should remain aware that at present such events may remain unresolved. The source(s) of these events is under investigation. Release of daily graphics files at same time. --------------------------------------------------------------------- April 5, 2001 Release of DOY 272 of 2000 -- DOY 353 of 2000, Version 1 of MAG Level-2 data in RTN coordinates. The source(s) of spacecraft field remain unresolved. Zeroes are quite good for all three instrument ranges of interest at L1. No strikingly anomalous signals are seen in this time, but continued analysis in scientific efforts may always reveal previously unknown problems. B=(0,0,0) values in processed data appear to persist, but source has never been identified and they must be treated as bad data. Release of daily graphics files at same time. --------------------------------------------------------------------- April 6, 2001 Release of DOY 354 of 2000 -- DOY 040 of 2001, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 18, 2001 Release of DOY 41 of 2001 -- DOY 120 of 2001, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 4, 2002 Release of DOY 121 of 2001 -- DOY 166 of 2001, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 7, 2002 Release of DOY 167 of 2001 -- DOY 365 of 2001, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Odd behavior during maneuver on DOY 205 (July 24, 2001). RMS levels change by ~0.5 nT in step fashion several times although instrument range does not change. Probably unresolved spacecraft signal, but data is not guaranteed during maneuvers. ACE Science Center informs us that: Larger than usual number of missing minor frames in telemetry for DOYs 351 (~0.6%) and 352 (~4%). This does not interfere with processing or overall data quality of MAG data. Attitude data for DOYs 356-360, inclusive, inaccurate to ~1 degree due to errors in the star scanner. --------------------------------------------------------------------- July 16, 2002 Release of DOY 248 of 1997 -- DOY 365 of 1997, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. MAG was only instrument on and taking data at this time, so there has been little call for the 1997 data. Days 342-347 and 349 are missing due to halo insertion maneuver. There was no science telemetry at this time. The first 11 days of flight are difficult to analyze due to many reasons. However, at least some fraction of these will be released shortly following further analysis. Several days show anomalous behavior: Days 250-253 show odd 30-minute oscillation similar to that seen during first 11 days of mission. Odd stepping in fluctuation level on days 258, 262, 266, 267, and 353. Zeroes appear to step briefly on days 276-277, 289, 302-304, 316-317, and 332-333. Both of the above effects are at the < 0.5 nT level. Sources of the above behavior have not been identified, but further effort to refine the data will probably reduce or eliminate the effect. --------------------------------------------------------------------- July 17, 2002 Release of DOY 245 of 1997 -- DOY 247 of 1997, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. ACE was launched on DOY 237 of 1997. Data from launch through DOY 244 shows more rapidly changing zeroes of undetermined origin than is seen in the remainder of the mission to date. A future version of the MAG processing software will better handle this situation. Since this data is not now up to the standards of the ACE/MAG instrument team, we are not releasing these 8 days of data to the general public at this time. If data from these 8 days are desired, please contact the ACE/MAG team and arrangements can be made to deliver the data in the best form available and at the same time that the appropriate warnings regarding data quality during this time can be provided. --------------------------------------------------------------------- July 29, 2002 Rerelease of DOY 001 of 1998 -- DOY 300 of 1998, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. This release was motivated by an ASC request to standardize MAG data deposits in a form opiginally established with 1998-301 data. This format contains the complete spacecraft position information that has been standard ever since. The data released now should be identical to that which was released earlier, but in fact there are small differences. Early in 1998 the data time tag used by the MAG team was approximate. It is now correct. Also, small changes in the computed IMF have resulted from changes in the analysis program. Generally, the changes are small. The largest changes are seen on days 121 through 160 when changes up to 0.15 nT are seen. Generally, but not always, the change results from better zeroes and contains a smaller spin tone. A formal release of Version 2 data is still intended that will contain additional changes to the processing, but for now no version number other than 1 is attached to this data. --------------------------------------------------------------------- August 4, 2002 Release of DOY 001 of 2002 -- DOY 146 of 2002, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Zeroes processing uncovered interesting oscillations in the spacecraft field starting ~ day 30 and continuing to at least day 73. The period of the oscillations is ~8 days. The amplitude is ~0.12 nT at both sensors. Data continue to have occasional B=(0,0,0) and Bmag=0 values arising from unresolved processing source. Values appear in 8-s blocks with multiple contiguous 8-s blocks possible. User is advised to test for this condition as well as the badpoint flag -999.9 and treat both as unphysical. --------------------------------------------------------------------- September 16, 2002 Release of DOY 147 of 2002 -- DOY 203 of 2002, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. June 26, 2002 (DOY 177) from ~9:30 to ~11:00 UT contains telemetry errors. Resulting MAG analysis yields B=(0,0,0) and Bmag=0 arising from unresolved processing source. User is advised to test for this condition as well as the badpoint flag -999.9 and treat both as unphysical. --------------------------------------------------------------------- September 18, 2002 Release of DOY 204 of 2002 -- DOY 208 of 2002, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 4, 2003 Release of DOY 209 of 2002 -- DOY 235 of 2002, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 6, 2003 Release of DOY 236 of 2002 -- DOY 262 of 2002, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 5, 2003 Release of DOY 264 of 2002 -- DOY 343 of 2002, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 23, 2003 Release of DOY 344 of 2002 -- DOY 032 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 22, 2003 Release of DOY 33 of 2003 -- DOY 059 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 23, 2003 Release of DOY 60 of 2003 -- DOY 086 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. 9.5 hour data gap on day 71 (March 12). --------------------------------------------------------------------- October 30, 2003 Release of DOY 87 of 2003 -- DOY 113 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 2, 2003 Release of DOY 114 of 2003 -- DOY 140 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 21, 2003 Release of DOY 141 of 2003 -- DOY 167 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Note: Less than 2 hours of data are missing on day 142, from ~15:10 until 17:00 UT. This is due to spacecraft being in ADC mode. This data is available upon request by special processing. --------------------------------------------------------------------- December 1, 2003 Release of DOY 168 of 2003 -- DOY 248 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- December 10, 2003 Release of DOY 249 of 2003 -- DOY 302 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- December 12, 2003 Release of DOY 303 of 2003 -- DOY 329 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 24, 2004 Release of DOY 330 of 2003 -- DOY 357 of 2003, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- June 24, 2004 Release of DOY 358 of 2003 -- DOY 72 of 2004, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. The data on several days has a low-level noise of undetermined source. It may be an interplanetary source, or it may not. Those days are day 358 of 2003 and days 56, 57 of 2004. It also observed on day 77 of 2004 which will be releases shortly. The noise is most evident in the |B| when |B| is otherwise very steady and the component fluctuations are low. This is not the first time this signal has been detected, but with solar minimum it may become more evident. --------------------------------------------------------------------- September 29, 2004 Release of DOY 73 of 2004 -- DOY 126 of 2004, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 3, 2004 Release of DOY 127 of 2004 -- DOY 207 of 2004, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. The apparent noise signal seen at quiet times is again evident during some days, most notably 130, 155, 159, 183-190, and 211-213, with the latter 3 days especially bad. The source and nature of the noise is not established, but it is only seen at some periods of low |B|. The chief characteristic is an abrupt switching and stepping in |B| at the 2 nT level. With the approach of solar minimum conditions, this problem may become more frequently evident. --------------------------------------------------------------------- December 1, 2004 Release of DOY 208 of 2004 -- DOY 288 of 2004, Version 1 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. The apparent noise signal continues. It is now believed that this is the result of an improperly determined zero for the spin axis direction in Range-0. This means that only periods with |B| < 4 nT are corrupted. It can be fixed and will be fixed in early January, but in the meantime the above data is released with this error still in place so that the bulk of the good data may be available to the community. Data when |B| < 4 nT are in error. The correct value is BR approx. 1 nT smaller than given. --------------------------------------------------------------------- March 23, 2005 Re-analysis of the 2003 and 2004 data has confirmed that the apparent noise source beginning DOY 087 of 2003 was, in fact, an incorrect zero applied to the spin-axis component in Range-0. Reprocessing of the MAG data has corrected this error and delivery of the newly reprocessed MAG data begins today. From this point on all MAG Level-2 files will be labeled as Version 2 and the letters "_V2" are appended to the end of file names. Release of DOY 087 of 2003 -- DOY 356 of 2003, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 24, 2005 Continued delivery of reprocessed Version 2 data. Release of DOY 357 of 2003 -- DOY 288 of 2004, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 22, 2005 Release of DOY 289 of 2004 -- DOY 342 of 2004, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 9, 2005 Release of DOY 343 of 2004 -- DOY 030 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 3, 2005 Release of DOY 31 of 2005 -- DOY 84 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 15, 2005 Release of DOY 85 of 2005 -- DOY 138 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 15, 2005 Release of DOY 139 of 2005 -- DOY 192 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 23, 2006 Release of DOY 193 of 2005 -- DOY 246 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 27, 2006 Release of DOY 247 of 2005 -- DOY 273 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. May be an unresolved spacecraft DC field change on DOY 271 from hours 16:30 - 19:45 UT, starting 2 hours prior to spacecraft maneuver and lasting until end of maneuver. There are no good calibration results during this time to be sure, but spin tone is supect. Error would be on the order of 0.25 nT in spin plane. Needs further examination. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 3, 2006 Release of DOY 274 of 2005 -- DOY 300 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 4, 2006 Release of DOY 301 of 2005 -- DOY 327 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 15, 2006 Release of DOY 328 of 2005 -- DOY 354 of 2005, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 20, 2006 Release of DOY 355 of 2005 -- DOY 016 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 24, 2006 Release of DOY 017 of 2006 -- DOY 043 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 24, 2006 Release of DOY 044 of 2006 -- DOY 070 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 1, 2006 Release of DOY 071 of 2006 -- DOY 097 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 5, 2006 Release of DOY 098 of 2006 -- DOY 124 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 9, 2006 Release of DOY 125 of 2006 -- DOY 151 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 20, 2006 Release of DOY 152 of 2006 -- DOY 205 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 2, 2006 Release of DOY 206 of 2006 -- DOY 232 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 3, 2006 Release of DOY 233 of 2006 -- DOY 259 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 31, 2007 Release of DOY 260 of 2006 -- DOY 313 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Day 306 filled due to processing problems - will correct and post asap. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 2, 2007 Release of DOY 314 of 2006 -- DOY 340 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 3, 2007 Release of DOY 341 of 2006 -- DOY 002 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Day 350 filled due to processing problems - will correct and post asap. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 12, 2007 Release of DOY 306 and 350 of 2006, Version 2 of MAG Level-2 data in RTN coordinates. Days previously filled due to processing problems - now corrected. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 8, 2007 Release of DOY 3 of 2007 -- DOY 29 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. There is a 2-hour data gap late on day 20 that is beyond the control of the MAG instrument. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 24, 2007 Release of DOY 30 of 2007 -- DOY 56 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 27, 2007 Release of DOY 57 of 2007 -- DOY 83 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 7, 2007 Release of DOY 84 of 2007 -- DOY 137 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 12, 2007 Release of DOY 138 of 2007 -- DOY 191 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 13, 2007 Release of DOY 192 of 2007 -- DOY 218 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 14, 2007 Release of DOY 219 of 2007 -- DOY 245 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 21, 2007 Release of DOY 246 of 2007 -- DOY 272 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 6, 2008 Release of DOY 273 of 2007 -- DOY 299 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 7, 2008 Release of DOY 300 of 2007 -- DOY 353 of 2007, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 8, 2008 Release of DOY 354 of 2007 -- DOY 15 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 24, 2008 Release of DOY 16 of 2008 -- DOY 42 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 10, 2008 Release of DOY 43 of 2008 -- DOY 69 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 12, 2008 Release of DOY 70 of 2008 -- DOY 96 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 11, 2008 Release of DOY 97 of 2008 -- DOY 150 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 13, 2008 Release of DOY 151 -- 177 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 30, 2008 Release of DOY 178 -- 204 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 1, 2008 Release of DOY 205 -- 231 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 2, 2008 Release of DOY 232 -- 258 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 21, 2009 Release of DOY 259 -- 312 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 27, 2009 Release of DOY 313 -- 366 of 2008, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- June 23, 2009 Release of DOY 001 -- 135 of 2009, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. We now recognize that fluctuations in the MAG calibration analysis previously attributed to "noise" is, in fact, strongly correlated to the inclination angle of the Sun upon the solar arrays. As a result this very-low-frequency sawtooth signal can be modeled and removed. We are working on this and hope to have it available in a general reanalysis of the data planned for the near future. Meanwhile, this signal accounts for the varying spin tone seen in the data. --------------------------------------------------------------------- October 31, 2009 Release of DOY 136 -- 216 of 2009, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 16, 2009 Release of DOY 217 -- 270 of 2009, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 22, 2010 Release of DOY 271 -- 351 of 2009, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Note that spacecraft maneuver on day 2009/303 produces a decaying noise signal that is more evident than usual given that the instrument is in its most sensitive range at that time. Also, days 315 and 316 have an apparent spin tone I could not resolve. I will revisit this later. --------------------------------------------------------------------- April 29, 2010 Release of DOY 352 of 2009 -- 013 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 30, 2010 Release of DOY 014 -- 040 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 31, 2010 Release of DOY 041 -- 094 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 3, 2010 Release of DOY 095 -- 121 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 5, 2010 Release of DOY 122 -- 148 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 30, 2011 Release of DOY 149 -- 202 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 4, 2011 Release of DOY 203 -- 256 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Notable spin tone during spacecraft maneuver on day 229. --------------------------------------------------------------------- February 10, 2011 Release of DOY 257 -- 310 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 18, 2011 Release of DOY 311 -- 337 of 2010, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 24, 2011 Release of DOY 338 of 2010 -- 053 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 25, 2011 Release of DOY 054 -- 080 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 1, 2011 Release of DOY 081 -- 134 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 26, 2011 Release of DOY 135 -- 188 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 29, 2011 Release of DOY 189 -- 242 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 27, 2012 Release of DOY 243 -- 296 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 3, 2012 Release of DOY 297 -- 323 of 2011, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Note days 2011/316-318 contains significant data gaps due to ADC data. Day 2011/317 ends prematurely for this reason. --------------------------------------------------------------------- April 10, 2012 Release of DOY 324 of 2011 -- DOY 066 of 2012, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 22, 2012 Release of DOY 067 -- 147 of 2012, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 7, 2012 Release of DOY 148 -- 228 of 2012, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 1, 2013 ACE/MAG processing is back with a new machine! Data delivery resumes. Release of DOY 229 -- 282 of 2012, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 6, 2013 Release of DOY 283 -- 336 of 2012, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 5, 2013 Release of DOY 337 -- 363 of 2012, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 30, 2013 Release of DOY 364 of 2012 -- 024 of 2013, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 7, 2013 Release of DOY 025 -- 105 of 2013, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- July 17, 2013 Release of DOY 106 -- 132 of 2013, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- November 8, 2013 Release of DOY 133 -- 294 of 2013, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- June 16, 2014 Re-release of DOY 151 -- 294 of 2013, Version 3 of MAG Level-2 data in RTN coordinates. Revised calibrations are < 0.2 nT change in science data. Release of DOY 295 -- 321 of 2013, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- July 4, 2014 Release of DOY 322 of 2013 -- DOY 010 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- July 14, 2014 Release of DOY 011 -- DOY 037 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- July 26, 2014 Release of DOY 038 -- DOY 118 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 13, 2014 Release of DOY 119 -- DOY 172 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 18, 2014 Release of DOY 173 -- DOY 226 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 18, 2015 Release of DOY 227 -- DOY 309 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 19, 2015 Release of DOY 310 -- DOY 334 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 20, 2015 Release of DOY 335 -- DOY 361 of 2014, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 1, 2015 Release of DOY 362 of 2014 -- DOY 23 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 14, 2015 Release of DOY 24 -- DOY 50 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 29, 2015 Release of DOY 51 -- DOY 77 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- June 8, 2015 Release of DOY 78 -- DOY 131 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 19, 2015 Release of DOY 132 -- DOY 185 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 30, 2015 Release of DOY 186 -- DOY 266 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 14, 2016 Release of DOY 267 -- DOY 293 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 1, 2016 Release of DOY 294 -- DOY 347 of 2015, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 14, 2016 Release of DOY 348 of 2015 -- DOY 009 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- March 15, 2016 Release of DOY 010 -- DOY 036 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 2, 2016 Release of DOY 091 -- DOY 171 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- September 20, 2016 Release of DOY 172 -- DOY 225 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- October 25, 2016 Release of DOY 226 -- DOY 279 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 10, 2017 Release of DOY 280 -- DOY 306 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- February 16, 2017 Release of DOY 307 -- DOY 360 of 2016, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 17, 2017 Release of DOY 361 of 2016 -- DOY 048 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- April 20, 2017 Release of DOY 049 -- DOY 075 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 5, 2017 Release of DOY 076 -- DOY 102 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 28, 2017 Release of DOY 103 -- DOY 183 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- August 30, 2017 Release of DOY 184 -- DOY 210 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 10, 2018 Release of DOY 211 -- DOY 264 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- January 30, 2018 Release of DOY 265 -- DOY 345 of 2017, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 16, 2018 Release of DOY 062 -- DOY 088 of 2018, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. --------------------------------------------------------------------- May 17, 2018 Repost of DOY 030 -- DOY 088 of 2018, Version 2 of MAG Level-2 data in RTN coordinates. Release of daily plots in RTN coordinates at same time. Reprocessed due to calibration error in Range-2. --------------------------------------------------------------------- September 21, 2018 Release of DOY 089 -- DOY 223 of 2018, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- February 21, 2019 Release of DOY 224 -- DOY 358 of 2018, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- April 25, 2019 Release of DOY 359 of 2018 -- DOY 048 of 2019, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- December 27, 2019 Release of DOY 049 -- DOY 290 of 2019, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- February 19, 2020 Release of DOY 291 of 2019 -- DOY 006 of 2020, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- June 5, 2020 Release of DOY 007 -- DOY 087 of 2020, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- August 25, 2020 Release of DOY 088 -- DOY 195 of 2020, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- November 22, 2020 Release of DOY 196 -- DOY 276 of 2020, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- January 9, 2021 Release of DOY 277 -- DOY 330 of 2020, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- March 11, 2021 Release of DOY 331 -- DOY 357 of 2020, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- March 14, 2021 Release of DOY 358 of 2020 -- DOY 045 of 2021, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- August 31, 2021 Release of DOY 046 -- DOY 207 of 2021, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- January 15, 2022 Release of DOY 208 -- DOY 315 of 2021, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- February 16, 2022 Release of DOY 316 of 2021 -- DOY 004 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- May 1, 2022 Release of DOY 005 -- DOY 058 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- June 8, 2022 Release of DOY 059 -- DOY 112 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- July 26, 2022 Release of DOY 113 -- DOY 193 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- October 18, 2022 Release of DOY 194 -- DOY 247 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- December 11, 2022 Release of DOY 248 -- DOY 301 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- January 9, 2023 Release of DOY 302 -- DOY 355 of 2022, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- March 6, 2023 Release of DOY 356 of 2022 -- DOY 017 of 2023, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- June 20, 2023 Release of DOY 018 -- DOY 125 of 2023, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- September 8, 2023 Release of DOY 126 -- DOY 233 of 2023, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- November 21, 2023 Release of DOY 234 -- DOY 287 of 2023, Version 2 of MAG Level-2 data in RTN coordinates. --------------------------------------------------------------------- February 23, 2024 Release of DOY 288 of 2023 -- DOY 003 of 2024, Version 2 of MAG Level-2 data in RTN coordinates. -------------------------------------------------------------------------- April 15, 2024 Release of DOY 004 -- DOY 084 of 2024, Version 2 of MAG Level-2 data RTN coordinates. -------------------------------------------------------------------------- July 30, 2024 Release of DOY 085 -- DOY 165 of 2024, Version 2 of MAG Level-2 data RTN coordinates. --- CWS