GOES - X-ray flare-like events
             Daily summary
from 20130517 1958 to 20130518 0957  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20130518    0201 - 0202          C    -5.9788
    20130518    0333 - 0436          C    -5.2197
    20130518    0515 - 0530          C    -5.9136
    20130518    0643 - 0710          C    -5.8729
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.