GOES - X-ray flare-like events
             Daily summary
from 20130811 1958 to 20130812 1012  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20130811    1958 - 2006          C    -5.762
    20130811    2126 - 2256          C    -5.0726
    20130811    2321 - 2330          C    -5.9469
    20130812    0015 - 0015          C    -6
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.