Read the Data

In order to read the data into IDL session, give the file name as follows:
IDL> file='./ds940220'
IDL> nors_rd_dat,file,time,mvd,freq,datalo,datahi,mvdd2,freqd2,datad2 $<$CR$>$
In order to read the data in specified duration:
IDL> timerange=['1994-2-20 2:00','1994-2-20 4:00'] $<$CR$>$
IDL> nors_rd_dat,file,time,mvd,freq,datalo,datahi ,mvdd2,freqd2,datad2,timerange=timerange $<$CR$>$