Aug 2010 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 Time(JST) Field Strength(mV/m) Field Strength(dB uV/m) 0:00 0.746 57.5 1:00 0.746 57.5 2:00 0.746 57.5 3:00 0.734 57.3 4:00 0.773 57.8 5:00 1.503 63.5 6:00 0.717 57.1 7:00 0.769 57.7 8:00 1.141 61.1 9:00 1.111 60.9 10:00 0.917 59.3 11:00 0.758 57.6 12:00 0.691 56.8 13:00 0.703 56.9 14:00 0.800 58.1 15:00 0.991 59.9 16:00 1.141 61.1 17:00 1.087 60.7 18:00 0.507 54.1 19:00 1.046 60.4 20:00 1.286 62.2 21:00 0.703 56.9 22:00 0.746 57.5 23:00 0.746 57.5