Aug. 2022 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 0.852 58.6 1:00 0.852 58.6 2:00 0.852 58.6 3:00 0.839 58.5 4:00 0.814 58.2 5:00 1.562 63.9 6:00 0.819 58.3 7:00 0.829 58.4 8:00 1.216 61.7 9:00 1.166 61.3 10:00 0.958 59.6 11:00 0.788 57.9 12:00 0.715 57.1 13:00 0.729 57.3 14:00 0.834 58.4 15:00 1.034 60.3 16:00 1.205 61.6 17:00 1.164 61.3 18:00 0.570 55.1 19:00 1.147 61.2 20:00 1.318 62.4 21:00 0.806 58.1 22:00 0.852 58.6 23:00 0.852 58.6