ISIS-2 Topside Sounder Average Ionogram over Resolute Bay, NU, Canada: RES, Latitude 75, Longitude 265

These Ionograms were digitized from the original ISIS-2 7-Track Analog Telemetry Tapes using the Facilities of the former Data Evaluation Laboratory at the NASA/GSFC....本批电离图（Ionograms）由原始ISIS-2号7轨模拟遥测磁带，借助美国国家航空航天局戈达德航天飞行中心（NASA/GSFC）前数据评估实验室（Data Evaluation Laboratory）的设施数字化处理得到。