STEREO LET Level 1 Helium intensities for behind spacecraft, for October 2014 Verified Data - OK to distribute File Created: Thu Dec 11 11:24:21 PST 2014 Created by: Caltech Space Radiation Lab 10Min-averaging Software Version: 04 Level 1 software version: 11 Time Resolution: 10 minutes Note: Timestamps mark Beginning of averaging interval Column 1: Year Column 2: Day of year (fractional) Column 3: Hour of day Column 4: Minute of hour Column 5: Second of minute Column 6: LET Livetime (seconds) Column 7: 2.2 - 2.7 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 8: 2.7 - 3.2 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 9: 3.2 - 3.6 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 10: 3.6 - 4.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 11: 4.0 - 4.5 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 12: 4.5 - 5.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 13: 5.0 - 6.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 14: 6.0 - 8.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 15: 8.0 - 10.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 16: 10.0 - 12.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 17: 12.0 - 15.0 MeV/nuc He intensity (1/(cm^2 s sr MeV/nuc)) Column 18 - 28: 11 He counts (counts/hour) Column 29 - 39: 11 He statistical uncertainties (1/(cm^2 s sr MeV/nuc)) Bad/missing data are filled as follows: -9999.9 for floating-point data -9999 for integer data 10-Minute Averages and Uncertainties are calculated as follows: I = Sum(Ii)/M U(I) = sqrt ( Sum( Ii^2/Ni ) ) / M I is the hourly average intensity U(I) is the uncertainty in the calculated average intensity Ii is the intensity for minute i in one of the energy bins Ii^2 = Ii * Ii (in case the notation is confusing...) Ni is the counts for minute i in one of the energy bins M is the number of good 1-minute records in the averaging interval. BEGIN DATA