English: DCF77 field strength over a 24 hour period measured in Nerja on the south coast of Spain, 1,801 km (1,119 mi) from the transmitter in Mainflingen, Germany. Peak strength is observed around 1 AM; at daytime, the signal is weakened by ionospheric activity.
Deutsch: DCF77 Signalstärke, gemessen über einen Zeitraum von 24 Stunden in Nerja, an der Südküste Spaniens, 1.801 km vom Transmitter in Mainflingen entfernt. Maximale Signalstärke wurde um etwa 1 Uhr nachts gemessen. Das Signal ist aufgrund von ionosphärischen Aktivitäten tagsüber schwächer.
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