$sat_alb_file = "ar2021042320_goes13_20210423_1940.satalb"; $sat_alb_bird = "goes13"; $sat_alb_date = "goes13:20210423_1940"; $sat_alb_chan = "vis"; $sat_alb_data = "ar2021042320_goes13_20210423_1940.satalb";