RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 20, ES1004, doi:10.2205/2019ES000699, 2020 Figure 4. Contour map of $N_mF2$ (in $10^{11}$ m$^{-3}$, the gray scale is common for all three plots) for (a) January, 2008, (b) March and (c) July, 2007. The location of the ESR and the SGO ionosonde in each MLT hour is marked by blue and orange dots, respectively. Copyright 2020 by the Geophysical Center RAS. Generated from LaTeX source by ELXfinal, v.2.0 software package. |