Dec. 2020 Yamagata-ken Yamagata-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 38.23 Longitude of receiver(Degree): 140.37 Distance from Ohtakadoya-yama LF station (km): 105 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 10.634 80.5 1:00 10.634 80.5 2:00 10.634 80.5 3:00 10.634 80.5 4:00 10.634 80.5 5:00 10.419 80.4 6:00 9.481 79.5 7:00 9.817 79.8 8:00 9.692 79.7 9:00 8.783 78.9 10:00 9.370 79.4 11:00 9.555 79.6 12:00 9.556 79.6 13:00 9.456 79.5 14:00 8.851 78.9 15:00 9.681 79.7 16:00 9.198 79.3 17:00 10.087 80.1 18:00 9.961 80.0 19:00 10.631 80.5 20:00 10.634 80.5 21:00 10.634 80.5 22:00 10.634 80.5 23:00 10.634 80.5