Feb. 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 0.819 58.3 6:00 1.299 62.3 7:00 1.082 60.7 8:00 0.617 55.8 9:00 1.182 61.5 10:00 1.250 61.9 11:00 1.185 61.5 12:00 1.136 61.1 13:00 1.146 61.2 14:00 1.209 61.6 15:00 1.254 62.0 16:00 1.066 60.6 17:00 0.460 53.3 18:00 1.565 63.9 19:00 0.984 59.9 20:00 0.840 58.5 21:00 0.852 58.6 22:00 0.852 58.6 23:00 0.852 58.6