Ionospheric Condition Yesterday

The top panel shows the hourly values of maximum usable frequency by distance of 3000 km- MUF3000F2,  when center of radiopath coincides with the surroundings of Sofia.

The bottom panel shows the hourly values of ionosperic F region critical frequency- foF2, which coincides with maximum usable frequency by distance less than 100 km. Below are the hourly values of the E-region critical frequency- foE.

Data is presented in local time for Eastern European Time Zone, Universal Time plus two hours.

Data are from the station Plana- Sofia,   NIGGG-BAS, code SQ143.