Table 2.
Descriptive statistics of studied building materials
| Variables | 226Ra | 232Th | 40K |
|---|---|---|---|
| Median (Bq kg−1) | 30 | 22 | 279 |
| Std. deviation (Bq kg−1) | 11 | 12 | 247 |
| Skewness | 0 | 1 | 2 |
| Kurtosis | -1 | 2 | 3 |
| Geometric mean (Bq kg−1) | 24 | 20 | 242 |
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