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Constellation of ionospheric pierce points at Bahir Dar Ethiopia. The blue cross marks the location of the receiver. The color of the pierce points corresponds to the strength of the amplitude scintillation S4 as indicated by the color bar below. The left half circle shows L1 (C/A)/E1. The right half circle shows GPS L5, GLONASS L2 and Galileo E5a, if available. The number next to the pierce point corresponds to the satellite id according to NMEA notation i.e. GPS: 1-32, GLONASS: 65-96, Galileo: > 200.
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