Dec. 2019 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 0.773 57.8 1:00 0.773 57.8 2:00 0.773 57.8 3:00 0.773 57.8 4:00 0.773 57.8 5:00 0.773 57.8 6:00 0.731 57.3 7:00 0.607 55.7 8:00 0.785 57.9 9:00 0.691 56.8 10:00 0.535 54.6 11:00 0.435 52.8 12:00 0.394 51.9 13:00 0.400 52.0 14:00 0.455 53.2 15:00 0.571 55.1 16:00 0.733 57.3 17:00 0.780 57.8 18:00 0.605 55.6 19:00 0.773 57.8 20:00 0.773 57.8 21:00 0.773 57.8 22:00 0.773 57.8 23:00 0.773 57.8