Figure 2
The anomaly threshold of soil gas estimated by Quantile-quantile plots (Q-Q plot) method. (a)He, (b) H2, (c) N2/O2, (d)CO2, (e)Rn, (f)Hg.
Figure 2 | Geochemical Transactions
The anomaly threshold of soil gas estimated by Quantile-quantile plots (Q-Q plot) method. (a)He, (b) H2, (c) N2/O2, (d)CO2, (e)Rn, (f)Hg.