Table 1.

Comparison of the concentration of radon gas (in Bq/m³) in residential homes and public places in the City of Shiraz

Variables		n	Mean	SD	Minimum	Maximum
Type of Building	Residential	112	57.6	33.06	17	250
	Public Place	73	38.56	17.46	11	86
Age of Building	Newly-Built	97	47	24.91	14	170
	Old	88	53.6	33.54	11	250
Places Sampled	Bedroom	107	54.94	31	16	250
	Living Room	78	43.5	25.93	11	179
Floors in the Building	Ground Floor	145	49.63	31.07	11	250
	2nd Floor and up	40	42.35	17.78	16	123
Material used for the Building	Brick	172	49.65	25.97	11	179
	Cement Block	13	57.41	62.42	23	250
Flooring in the Building	Stone	14	43	24.6	11	95
	Ceramic	66	59.19	39.4	14	250
	Mosaic	105	45.35	20.2	15	112