• SIS continues to age and is affected by increasing temperatures (particularly in the winter months) which cause increased noise on the matrix strips. This is driving the instrument livetime to very low levels and affecting the browse rates as well. In particular, the E>10 and E>30 MeV protons fluxes are strongly affected by the increased temperatures, noise, and low livetime. Until further analysis has been made, it is suggested that these rates not be used.

• Click on images for the full-size graph.

SIS - Protons (H):	1 hr Averages	Daily Averages
E > 10 MeV
E > 30 MeV

SIS - Helium (He):	1 hr Averages	Daily Averages
3.7 - 7.4 MeV/nuc

SIS - Carbon (C), Nitrogen (N), Oxygen (O):	1 hr Averages	Daily Averages
7 - 10 MeV/nuc
10 - 15 MeV/nuc

SIS - Flux of Z >= 10 Cosmic Rays:	1 hr Averages	Daily Averages
9 - 21 MeV/nuc

html updated: Aug 31, 1998