Table 1.
Radon Concentration, Surface Exhalation Rate and Mass Exhalation Rate for Hwangtohs

Production area	Overall Avg. in chamber (pCi/L)	Empty chamber(pCi/L)	Concentration of emanation (pCi/L)	Surface exhalation rate (Bq·m-2·h-1)	Mass exhalation rate (Bq·kg-1·h-1)
A Province	6.3	0.4	5.9	1.5817	0.0443
B Province	7.2	0.4	6.8	1.8230	0.0510
C Province	5.7	0.4	5.3	1.4208	0.0398
D Province	11.7	0.4	11.3	3.0293	0.0848