Advanced Composition Explorer (ACE) Real-Time
This dataset consists of 1-minute averages of solar wind observations taken by the NASA Advanced Composition Explorer (ACE)
spacecraft which orbits the Sun-Earth L1 Lagrangian point. NGDC's SPIDR system collects these observations in near real-time
from the NOAA Space Weather Prediction Center (SWPC). Research quality, post-processed ACE observations can be retrieved
from the ACE web portal (http://www.srl.caltech.edu/ACE/).