ACE SIS Level 2 Data
You might like to try our alternate ACE Level 2 data server
Solar Energetic Particle, Low Energy Galactic Cosmic Ray,
and Anomalous Cosmic Ray Fluxes
Please read the Release Notes for new caveats/warnings for SIS data from September 2024 onwards
256-second Averages (Yearly Data Files)
Hourly Averages (27-day Bartels rotations DOY/Year)
Daily Averages (27-day Bartels rotations DOY/Year)
Bartels Rotation (27-day) Averages (begin DOY/Year - end DOY/Year)
SIS Data Documentation
Last Updated: Mon Aug 18 01:38:06 PDT 2025 Return to ASC Home Page