Figure 3 | Scientific Reports

Figure 3

From: Multiple seasonality in soil radon time series

Figure 3

For each site, the conditional monthly probability density function (conditional histogram) of the standardised daily radon is plotted. In the vertical axis, there is the month index and in the horizontal axis there is the standardised daily radon concentration ranging between 0 and 1. For a fixed month, red (white) colour indicates radon intervals with higher (lower) density.

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