GOES - X-ray flare-like events
             Daily summary
from 20130515 1958 to 20130516 0957  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20130515    2049 - 2052          C    -6
    20130515    2055 - 2104          C    -5.9706
    20130515    2228 - 2238          C    -5.9586
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.