Apr. 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 7.153 77.1 4:00 7.131 77.1 5:00 9.078 79.2 6:00 8.839 78.9 7:00 7.054 77.0 8:00 8.530 78.6 9:00 7.707 77.7 10:00 7.770 77.8 11:00 7.852 77.9 12:00 7.858 77.9 13:00 7.795 77.8 14:00 7.684 77.7 15:00 8.315 78.4 16:00 7.693 77.7 17:00 9.115 79.2 18:00 9.031 79.1 19:00 8.819 78.9 20:00 7.174 77.1 21:00 7.091 77.0 22:00 7.091 77.0 23:00 7.091 77.0