Oct. 2017 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 0.852 58.6 4:00 0.852 58.6 5:00 0.804 58.1 6:00 1.502 63.5 7:00 0.851 58.6 8:00 0.825 58.3 9:00 1.228 61.8 10:00 1.217 61.7 11:00 1.123 61.0 12:00 1.057 60.5 13:00 1.076 60.6 14:00 1.153 61.2 15:00 1.240 61.9 16:00 1.170 61.4 17:00 0.565 55.0 18:00 1.222 61.7 19:00 1.200 61.6 20:00 0.825 58.3 21:00 0.852 58.6 22:00 0.852 58.6 23:00 0.852 58.6