The Toyokawa Radio Polarimeter was observing in 4 frequencies, namely , 2, 4, and 9 GHz.
In order to read the data into IDL session, give the date (JST) as follows:
IDL> day='2000-4-8'
IDL> tykw_rd_dat,day,mvalid,time,fi,fv,freq <CR>
or give the file name as follows:
IDL> file='ty921102.01i' <CR> ; 1GHz I-component
IDL> file0pa='ty921102.0pa' <CR> ; 0PA calibration data
IDL> filestt='ty921102.stt' <CR> ; status data
IDL> tykw_rd_dat,file,file0pa,filestt,mvalid,time,data <CR>
In order to read the data in specified duration:
IDL> timerange='1992-11-2 '+['2:00','4:00'] <CR>
IDL> tykw_rd_dat,day,mvalid,time,fi,fv,freq,timerange=timerange <CR>
In order to read the data of specified frequency, e.g. for 9 GHz,
IDL> rdfreq=[0,0,0,1] <CR>
IDL> ytkw_rd_dat,file,mvalid,time,fi,fv,rdfreq=rdfreq <CR>
For 1GHz and 9GHz,
IDL> rdfreq=[1,0,0,1] <CR>
IDL> tykw_rd_dat,file,mvalid,time,fi,fv,rdfreq=rdfreq <CR>
Each element in the array rdfreq corresponds to the data of
one frequency among 1, 2, 3.75, and 9.4 GHz.