https://landsat-diss.eo.esa.int/oads/data/LandsatETMCloudFree/L07_RKSE_ETM_GTC_1P_19990804T121957_19990804T122026_001615_0217_0014_5E18_v0100.SIP.ZIP
https://landsat-diss.eo.esa.int/oads/data/LandsatETMCloudFree/L07_RNSG_ETM_GTC_1P_19990804T121958_19990804T122026_001615_0217_0014_FFFF_v0100.SIP.ZIP