The polar diagram plot description
The polar diagram shows the spacecraft corrected geomagnetic
co-ordinates: co-latitude - local time.
The geomagnetic co-latitude in the range (0°, 30°) is
shown with 10° step.
The geomagnetic local time meridians from 0 to 21 are shown with
3 hours step.
In case of the one satellite investigation on the plot
the footprints are labeled by the symbol, corresponding
to the geophysical regions in the satellite position.
In case of the multisatellite investigations the footprints of
the different spacecraft are labeled by the different colours.
The SC names on the plot are shown by the corresponding colours.