GOES - X-ray flare-like events
             Daily summary
from 20131210 1900 to 20131211 1112  (YYYYMMDD hhmm UT)
 
   date     start-end time       class  log10(X)
(YYYYMMDD)     (hhmm UT)
    20131210    1918 - 2201          C    -5.6326
    20131210    2317 - 2336          C    -5.9547
    20131211    0223 - 0223          C    -5.9914
    20131211    0643 - 0959          C    -5.7423
 
 
Used are solar X-ray fluxes measured by GOES 15 in the 1-8 Angstrom passband.