Dec. 2017 Niigata-ken Niigata-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 37.90 Longitude of receiver(Degree): 139.02 Distance from Ohtakadoya-yama LF station (km): 172 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 3.907 71.8 1:00 3.907 71.8 2:00 3.907 71.8 3:00 3.907 71.8 4:00 3.907 71.8 5:00 4.114 72.3 6:00 6.317 76.0 7:00 5.669 75.1 8:00 6.372 76.1 9:00 5.125 74.2 10:00 5.309 74.5 11:00 5.739 75.2 12:00 5.776 75.2 13:00 5.439 74.7 14:00 4.999 74.0 15:00 6.361 76.1 16:00 4.893 73.8 17:00 4.781 73.6 18:00 4.792 73.6 19:00 3.910 71.8 20:00 3.907 71.8 21:00 3.907 71.8 22:00 3.907 71.8 23:00 3.907 71.8