After having read the WBS data with YODAT, you can get a light curve of the
count rate (counts/4 sec) of GRS-PHL or GRS-PHH using UTPLOT. This works in a
similar way to PLOT_HXSPH.
The units of a and b are MeV.
IDL> plot_grsphl,index,data,ph=1,range=[a,b]
IDL> plot_grsphl,index,data,ph=2,channel=[i,j]
IDL> plot_grsphh,index,data,ph=1,range=[a,b]
IDL> plot_grsphh,index,data,ph=2,channel=[i,j]