Table 2.

Achieved NVP concentrations in the inhalation chambers

Exposure day	Intended concentrations
	5 ppm	10 ppm	20 ppm
	Achieved concentrations
0	4.40 ± 0.3	9.10 ± 1.1	17.90 ± 0.8
1	2.90 ± 1.3	6.40 ± 1.6	16.30 ± 2.3
2	4.30 ± 0.2	760 ± 0.7	15.60 ± 1.8
3	5.80 ± 0.1	11.70 ± 0.6	21.30 ± 0.1
4	5.80 ± 0.2	12.10 ± 0.6	20.50 ± 2.4
5	5.30 ± 1.3	11.30 ± 1.7	22.20 ± 0.7