Figure 5From: Increased radon-222 in soil gas because of cumulative seismicity at active faultsScattergram of the N 222 and I 226 data. Scattergram for the relationship between the number of 222Rn and the γ-ray intensity of 226Ra at the same measurement points. The data from Atotsugawa Fault were not included in this scattergram because of the difficulty in taking soil samples at the survey points there.Back to article page