Aug. 2023 Yamagata-ken Yamagata-shi Expected value of LF field strength Transmitting Station: Ohtakadoya-yama LF station Latitude of receiver(Degree): 38.23 Longitude of receiver(Degree): 140.37 Distance from Ohtakadoya-yama LF station (km): 105 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 10.913 80.8 1:00 10.913 80.8 2:00 10.865 80.7 3:00 10.637 80.5 4:00 8.441 78.5 5:00 10.511 80.4 6:00 10.194 80.2 7:00 8.591 78.7 8:00 9.674 79.7 9:00 9.071 79.2 10:00 9.135 79.2 11:00 9.192 79.3 12:00 9.196 79.3 13:00 9.155 79.2 14:00 9.065 79.1 15:00 9.499 79.6 16:00 9.110 79.2 17:00 10.114 80.1 18:00 10.064 80.1 19:00 10.232 80.2 20:00 10.566 80.5 21:00 10.818 80.7 22:00 10.913 80.8 23:00 10.913 80.8