Aug. 2023 Yamagata-ken Yamagata-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 38.23 Longitude of receiver(Degree): 140.37 Distance from Hagane-yama LF station (km): 1058 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 1.471 63.4 1:00 1.471 63.4 2:00 1.471 63.4 3:00 1.465 63.3 4:00 1.439 63.2 5:00 1.409 63.0 6:00 0.664 56.4 7:00 1.180 61.4 8:00 1.155 61.2 9:00 0.899 59.1 10:00 0.621 55.9 11:00 0.437 52.8 12:00 0.360 51.1 13:00 0.374 51.4 14:00 0.484 53.7 15:00 0.705 57.0 16:00 0.989 59.9 17:00 1.206 61.6 18:00 1.066 60.6 19:00 0.679 56.6 20:00 1.524 63.7 21:00 1.451 63.2 22:00 1.471 63.4 23:00 1.471 63.4