Sep. 2023 Niigata-ken Niigata-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 37.90 Longitude of receiver(Degree): 139.02 Distance from Hagane-yama LF station (km): 936 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.969 59.7 1:00 0.969 59.7 2:00 0.969 59.7 3:00 0.969 59.7 4:00 0.953 59.6 5:00 1.115 60.9 6:00 1.615 64.2 7:00 0.564 55.0 8:00 1.204 61.6 9:00 1.322 62.4 10:00 1.181 61.4 11:00 0.988 59.9 12:00 0.898 59.1 13:00 0.915 59.2 14:00 1.041 60.4 15:00 1.233 61.8 16:00 1.326 62.4 17:00 1.034 60.3 18:00 0.739 57.4 19:00 1.711 64.7 20:00 0.919 59.3 21:00 0.967 59.7 22:00 0.969 59.7 23:00 0.969 59.7