GOES - X-ray flare-like events
             Daily summary
from 20130820 2013 to 20130821 1027  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20130821    0403 - 0410          C    -5.8861
    20130821    0456 - 0505          C    -5.7878
    20130821    0728 - 0838          C    -5.6459
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.