Index of /sp_phys/data/isis/ionogram_cdf/isis2/RES_75N_265E/1973/087
i2_av_res_1973087083921_v01.cdf
i2_av_res_1973087083956_v01.cdf
i2_av_res_1973087125016_v01.cdf
i2_av_res_1973087125224_v01.cdf