May 2007 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 0.714 57.1 4:00 1.006 60.1 5:00 1.521 63.6 6:00 0.440 52.9 7:00 0.903 59.1 8:00 1.152 61.2 9:00 1.085 60.7 10:00 0.866 58.7 11:00 0.717 57.1 12:00 0.657 56.4 13:00 0.668 56.5 14:00 0.755 57.6 15:00 0.934 59.4 16:00 1.122 61.0 17:00 1.124 61.0 18:00 0.689 56.8 19:00 0.807 58.1 20:00 1.490 63.5 21:00 0.799 58.0 22:00 0.726 57.2 23:00 0.746 57.5