Table 3.

Geometric mean concentrations (GM), geometric standard deviation (GSD) and 5th and 95th percentiles of HCHO, VOCs, and NO₂ inside the bedroom and kitchen in the sampled flats (calculated from Table 2).

	Bedroom				Kitchen
	GM	GSD	5th percentile	95th percentile	GM	GSD	5th percentile	95th percentile
HCHO	33.5	1.73	16	82	32.3	1.70	14.9	91.0
VOCs (total)	74.1	1.56	37.5	187	73.5	1.45	43.3	154
Benzene	2.54	1.78	1.1	8.7	2.89	1.86	1.1	8.6
Butanol	9.03	2.06	2.2	34	8.62	1.77	2.2	20.9
Butyl acetate	3.69	2.14	1.2	16.4	3.51	1.98	1.1	11.3
Carbon tetrachloride	0.64	2.00	0.2	1.6	0.72	2.09	0.2	1.4
Chloroform	0.89	1.28	0.8	2.2	0.86	1.23	0.8	2.0
1,2-Dichloroethane	1.38	2.97	0.3	17.9	1.29	2.11	0.6	5.9
p-Dichlorobenzene	0.49	3.89	0.3	17.7	0.46	3.16	20.3	8.6
Hexane	1.43	1.97	0.2	4.0	1.61	2.14	0.2	8.0
Methyl ethyl ketone	0.80	1.63	0.6	2.3	0.79	1.67	0.6	2.5
Methyl isobutyl ketone	0.35	1.87	0.2	0.9	0.33	1.88	0.2	0.9
Styrene	0.57	1.83	0.4	1.8	0.61	2.0	0.4	2.2
1,1,1-Trichloroethane	0.52	1.98	0.2	1.0	0.52	1.85	0.2	1.0
Tetrachloroethylene	0.27	2.21	0.2	1.3	0.27	2.25	0.2	1.6
Trichloroethylene	0.49	1.23	0.5	0.5	-	-	-	-
Toluene	13.4	2.07	4.4	45.6	13.6	2.04	4.3	52.2
o-Xylene	1.68	2.38	0.3	7.9	1.68	2.47	0.3	6.6
p-Xylene	5.77	1.88	1.7	17.4	6.08	1.96	1.9	17.9
Total xylenes	7.28	2.16	1.4	25.4	7.81	2.07	2.1	24.6
NO2	18.7	2.07	2.5	49.1	36.3	2.36	5.2	141

-: Calculation was not performed because all measured values were under the detection limit.