Table 2.
The descriptive statistics of seasonal correction factor for indoor radon concentrations measured by two different methods in 68 retrofit houses.
| Season | Measurement method | Min | Max | A.M | S.D | G.M | G.S.D |
|---|---|---|---|---|---|---|---|
| Spring | p | 0.60 | 2.26 | 1.10 | 0.31 | 1.06 | 1.30 |
| a | 0.62 | 2.01 | 1.07 | 0.24 | 1.05 | 1.24 | |
| Summer | p | 1.14 | 5.55 | 2.44 | 0.97 | 2.26 | 1.46 |
| a | 1.08 | 5.96 | 2.31 | 0.92 | 2.16 | 1.44 | |
| Autumn | p | 0.43 | 1.59 | 0.74 | 0.22 | 0.72 | 1.30 |
| a | 0.47 | 1.59 | 0.75 | 0.22 | 0.72 | 1.31 | |
| Winter | p | 0.25 | 1.05 | 0.61 | 0.17 | 0.59 | 1.34 |
| a | 0.37 | 0.98 | 0.63 | 0.13 | 0.61 | 1.24 |
Three of the surveyed buildings were treated as outliers, being excluded from this statistical analysis.
p—passive measurements using CR-39 detectors; a—active measurements using ICA system with TSRS2 radon sensor; A.M.—arithmetic mean; S.D.—standard deviation; G.M.—geometric mean; G.S.D.—geometric standard deviation.