Nov. 2023 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 3.686 71.3 1:00 3.686 71.3 2:00 3.686 71.3 3:00 3.686 71.3 4:00 3.691 71.3 5:00 4.011 72.1 6:00 4.677 73.4 7:00 4.290 72.6 8:00 6.836 76.7 9:00 4.436 72.9 10:00 5.818 75.3 11:00 6.299 76.0 12:00 6.320 76.0 13:00 6.002 75.6 14:00 4.710 73.5 15:00 6.053 75.6 16:00 4.295 72.7 17:00 4.569 73.2 18:00 5.305 74.5 19:00 3.754 71.5 20:00 3.686 71.3 21:00 3.686 71.3 22:00 3.686 71.3 23:00 3.686 71.3