There is a data base for the events ('evx' data)
from January 1990 to May 19923.
In order to list them, e.g. on June 9, 1991 UT,
IDL> norp_pr_evx,'1991-06-09' <CR>
From June 5, 1991 UT to June 8,
IDL> st_day='1991-06-05' <CR>
IDL> ed_day='1991-06-08' <CR>
IDL> norp_pr_evx,st_day,ed_day <CR>
For only strong events which have 1000 SFU peak flux in 17GHz,
IDL> norp_pr_evx,st_day,ed_day,criterion=1000 <CR>