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. Author manuscript; available in PMC: 2022 Aug 1.
Published in final edited form as: J Occup Environ Hyg. 2021 Jun 25;18(8):369–377. doi: 10.1080/15459624.2021.1933504

Table 4.

Lack of fit sum of squares analysis for inhalation and exhalation.

Source DF Sum of squares Mean square F ratio p-level Max R2
Inhalation Lack of Fit 165 6.60 0.04 0.75 0.78 0.99
Pure Error 10 0.53 0.05
Total Error 175 7.14
Exhalation Lack of Fit 154 1.33 0.01 0.32 0.99 0.98
Pure Error 5 0.13 0.03
Total Error 159 1.46