GOES - X-ray flare-like events
             Daily summary
from 20130518 1957 to 20130519 0957  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20130518    2048 - 2214          C    -5.618
    20130519    0334 - 0406          C    -5.8097
    20130519    0837 - 0838          C    -5.9172
    20130519    0912 - 0936          C    -5.4584
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.