Table 1.

Guideline indoor air values established by the Japanese Ministry of Health, Labour and Welfare for the target volatile organic compounds (VOCs).

Compound	Guideline Concentration (μg·m−3)
Acetaldehyde	48
p-Dichlorobenzene	240
Ethyl benzene	3800
Formaldehyde	100
Styrene	220
Tetradecane	330
Toluene	260
Xylenes	870