Index of /sp_phys/data/isis/ionogram_cdf/isis2/RES_75N_265E/1973/291
i2_av_res_1973291165223_v01.cdf
i2_av_res_1973291165614_v01.cdf
i2_av_res_1973291214235_v01.cdf
i2_av_res_1973291235219_v01.cdf