GOES - X-ray flare-like events
             Daily summary
from 20131211 1900 to 20131212 1112  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20131211    2005 - 2013          C    -5.9626
    20131211    2037 - 2115          C    -5.7545
    20131211    2252 - 2345          C    -5.5575
    20131212    0308 - 1112          C    -5.3307
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.