The ionosonde data is used to monitor the base height of the F-layer as well as the presence or absence of Spread-F at the time of the appearance of depletions in all sky images.

• 在进行大气晖光观测的同时，观测地附近的电离层探测仪也被用来量测电离层的最低高度，并记录当大气晖光耗损存在时，散状F层是否出现。