| Solar Cycle 20 | Solar Cycle 21 | ||||||||||||||
Maximum du cycle | Minimum du cycle | Maximum du cycle | Minimum du cycle | |||||||||||||
Seasons | W | Sg | S | Au | W | Sg | S | Au | W | Sg | S | Au | W | Sg | S | Au |
Ouagadougou foF2 (MHz) | 12.36 | 12.27 | 11.01 | 12.42 | 8.83 | 8.94 | 8.02 | 8.62 | 13.68 | 13.83 | 11.59 | 14.02 | 8.13 | 9.56 | 7.52 | 8.94 |
Manila foF2 (MHz) | 12.88 | 12.51 | 11.42 | 13.13 | 8.83 | 10.30 | 8.81 | 9.88 | 14.02 | 13.54 | 12.20 | 14.40 | 8.76 | 8.68 | 8.97 | 9.59 |