Record-setting Solar Flares
This list is based in part on "Large Solar Flares Since 1976" compiled by IPS Radio & Space Services.

1             04/11/03              X28
   2             02/04/01              X20.0
   2             16/08/89              X20.0
   3             28/10/03              X17.2
  4             06/03/89              X15.0
  4             11/07/78              X15.0
  5             15/04/01              X14.4
  6             24/04/84              X13.0
  6             19/10/89              X13.0
  7             15/12/82              X12.9
  8             06/06/82              X12.0
  8             01/06/91              X12.0
  8             04/06/91              X12.0
  8             06/06/91              X12.0
  8             11/06/91              X12.0
  8             15/06/91              X12.0
  9             17/12/82              X10.1
  9              20/05/84              X10.1
10             29/10/03              X10
   11             25/01/91              X10.0
  11             09/06/91              X10.0