GOES - X-ray flare-like events
             Daily summary
from 20110420 2013 to 20110421 1011  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20110420    2013 - 2017          C    -5.9208
    20110421    0836 - 0840          C    -5.9872
    20110421    0941 - 1011          C    -5.0665
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.