Figure 4
From: The ionospheric irregularities climatology over Svalbard from solar cycle 23

Scintillation and ROT climatology maps obtained from the full dataset: maps of occurrence of σΦ above 0.1 (a) and 0.25 (d) radians; maps of S4 above 0.1 (b) and 0.25 (e) maps of mean (c) and standard deviation of ROT (f).