Aug. 2023 Hokkaido Sapporo-shi Expected value of LF field strength Transmitting Station: Hagane-yama LF station Latitude of receiver(Degree): 43.05 Longitude of receiver(Degree): 141.35 Distance from Hagane-yama LF station (km): 1440 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.894 59.0 1:00 0.894 59.0 2:00 0.894 59.0 3:00 0.894 59.0 4:00 0.875 58.8 5:00 0.723 57.2 6:00 0.891 59.0 7:00 0.780 57.8 8:00 0.562 55.0 9:00 0.394 51.9 10:00 0.282 49.0 11:00 0.221 46.9 12:00 0.192 45.7 13:00 0.196 45.9 14:00 0.234 47.4 15:00 0.308 49.8 16:00 0.432 52.7 17:00 0.616 55.8 18:00 0.834 58.4 19:00 0.875 58.8 20:00 0.738 57.4 21:00 0.891 59.0 22:00 0.894 59.0 23:00 0.894 59.0