Index of /sp_phys/data/isis/ionogram_cdf/isis2/RES_75N_265E/1973/365
i2_av_res_1973365075545_v01.cdf
i2_av_res_1973365075715_v01.cdf
i2_av_res_1973365075716_v01.cdf
i2_av_res_1973365090456_v01.cdf