Skip to main content
. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: J Breath Res. 2011 Jul 15;5(3):037108. doi: 10.1088/1752-7155/5/3/037108

Table 2.

Comparison of standard deviation of test results and instrument precision.

Breath Gas Average σ per subject Average (σ/mean mixing ratio)×100 Instrumental noise a
NO 2.1 ppb 9.7% 0.2 ppb
CO 117 ppb 6.5% 0.6 ppb
CO2 0.4 % 8.5% 0.06 %
a

instrumental noise over the integration time of the measurement