Appendix 2.

Point estimation and 95% confidence intervals (CI) of median values in Table 2.

	Bedroom		Kitchen		Outdoor
	Point estimation	95%CI	Point estimation	95%CI	Point estimation	95%CI
Formaldehyde	34.4	28.9–40.1	33.1	28.7–39.8	15.6	13.1–17.9
VOCs (total)	49.2	41.2–61.5	49.3	42.5–58.2	33.9	28.2–40.2
Benzene	2.56	2.26–2.93	2.91	2.60–3.34	2.49	2.16–2.91
Butanol	9.72	8.37–11.3	9.02	7.88–10.4	5.21	4.31–6.32
Butyl acetate	3.83	3.25–4.69	3.72	3.24–4.28	2.95	2.37–3.67
Carbon tetrachloride	0.78	0.68–0.91	0.81	0.73–0.95	0.81	0.64–0.97
Chloroform	0.82	0.82–0.82	0.82	0.82–0.82	0.82	0.82–0.82
1,2-Dichloroethane	1.22	1.00–1.80	1.21	1.04–1.71	1.01	0.83–1.19
p-Dichlorobenzene	0.39	0.26–0.44	0.39	0.26–0.46	0.26	0.26–0.26
Ethyl acetate	20.3	20.3–20.3	20.3	20.3–20.3	20.3	20.3–20.3
Hexane	1.6	1.38–1.84	1.7	1.48–1.94	1.67	1.36–1.99
Methyl ethyl ketone	0.62	0.62–0.97	0.62	0.62–1.02	0.62	0.62–1.09
Methyl isobutyl ketone	0.42	0.31–0.48	0.38	0.21–0.48	0.21	0.21–0.36
Styrene	0.39	0.39–0.89	0.68	0.39–0.96	0.39	0.39–0.96
1,1,1-Trichloroethane	0.60	0.50–0.68	0.61	0.50–0.68	0.50	0.41–0.67
Tetrachloroethylene	0.20	0.20–0.20	0.20	0.20–0.20	0.20	0.20–0.20
Trichloroethylene	0.47	0.47–0.47	0.47	0.47–0.47	0.47	0.47–0.47
Toluene	14.8	12.1–18.1	14.5	11.9–17.9	10.3	8.79–12.4
o-Xylene	1.95	1.58–2.39	1.90	1.58–2.30	1.50	1.11–1.93
p-Xylene	6.20	5.39–7.19	6.30	5.55–7.16	5.47	4.40–6.76
Total xylenes	8.25	7.00–9.67	8.24	7.12–9.49	6.94	5.40–8.69
NO2	22	18.6–25.8	44	36.4–51.8	31.2	25.0–38.0