Oct. 2023 Tochigi-ken Utsunomiya-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 36.55 Longitude of receiver(Degree): 139.88 Distance from Ohtakadoya-yama LF station (km): 126 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 7.091 77.0 1:00 7.091 77.0 2:00 7.091 77.0 3:00 7.091 77.0 4:00 7.145 77.1 5:00 7.602 77.6 6:00 9.319 79.4 7:00 9.225 79.3 8:00 7.254 77.2 9:00 8.620 78.7 10:00 7.854 77.9 11:00 7.610 77.6 12:00 7.599 77.6 13:00 7.756 77.8 14:00 8.468 78.6 15:00 7.890 77.9 16:00 8.704 78.8 17:00 8.181 78.3 18:00 9.248 79.3 19:00 7.169 77.1 20:00 7.091 77.0 21:00 7.091 77.0 22:00 7.091 77.0 23:00 7.091 77.0