GOES - X-ray flare-like events
             Daily summary
from 20130220 1900 to 20130221 1112  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20130220    2155 - 2212          C    -5.7645
    20130221    0254 - 0319          C    -5.7033
    20130221    0355 - 0429          C    -5.6882
    20130221    0459 - 0527          C    -5.5884
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.