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Table 2

Summary of results of annual radon concentration at different location in buildings.

Monitored location

Bed Sitting Kitchen Office Laboratory Total
NR of survey 54 41 32 76 26 228
Range (Bq/m3) 19.5–58.4 13.8–31.7 14.7–36.7 13.6–533.7 44.6–448.9 13.6–533.7
Median 29.1 23.4 26.8 125.1 204.9 33.3
AM 32.2 ± 1.5 23.3 ± 1.4 26.5 ± 1.5 157.6 ± 7.6 167.1 ± 8.2 91.7 ± 6.4
GM 31.3 23.0 26.0 118.4 142.1 54.5
GSD 1.2 1.1 1.2 5.3 6.8 2.1
% NR > 100 0 0 0 24.0 19.2 9.6
% NR > 200 0 0 0 21.3 50 12.7
% NR > 400 0 0 0 14.7 3.8 3.5

AM: Arithmetic Mean; GM: Geometric Mean; GSD: Geometric Standard Deviation.

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