PR_EVN helps you find when there is Yohkoh data available. An event is driven
by a change between QUIET and FLARE mode, or when there is a data gap of more
than 60 seconds. By typing:
IDL> pr_evn, '23-jun-92'
a list of the times that Yohkoh data are available and the number of datasets available for each instrument are listed for 24 hours starting at 23-jun-92 00:00. By typing:
IDL> pr_evn, '15-nov-91 20:00', '17-nov-91 15:00', /flare
all times that Yohkoh was in FLARE mode between those times is listed. By typing:
IDL> pr_evn, '1-jan-92', '1-jan-93', /flare, /counts, mindur=5, outfil='pr_evn.results'
the FLARE modes for 1992 are listed, and since the /COUNTS option was used, the maximum counting rate for certain WBS, HXT, and BCS channels is printed instead of the number of datasets available. It also prints the GOES classification when it is available. See the User's Guide for a sample output listing.