Examples of scintillation plots generated with the GISM. The total electron content values in TEC units calculated by the NeQuick2 background ionospheric model for 15 October 2015 at 20:00 UT (a). The corresponding post sunset distribution of vertical S₄ index shown on a globe for signal at the L band (b). The sky-maps as functions of zenith and azimuth angles for: (c) intensity scintillation index S₄, (d) phase scintillation index σ_S. The location of the ground observer is indicated by a star on (b).