Table 3 The data distribution of gas CO and CH4 of the simulator in meair and masterscreen
Gas | Group (%) | Volume(L) | MasterScreen | MeAir | Â | ||
|---|---|---|---|---|---|---|---|
Mean (Min-Max)(%) | Measurement error (%) | Mean (%) (Min-Max) | Measurement error (%) | P-value | |||
CO | Low (0.079) | 2.0 | 0.078(0.077–0.078) | -2.53- -1.27 | 0.076(0.076–0.076) | -3.80- -3.80 | <0.01 |
|  | 3.0 | 0.078(0.078–0.078) | -1.27- -1.27 | 0.076(0.076–0.077) | -3.80- -2.53 | ||
Middlle (0.100) | 2.0 | 0.100(0.099-0.100) | -1.00- 0.00 | 0.098(0.097–0.099) | -3.00- -1.00 | <0.01 | |
|  | 3.0 | 0.099(0.099-0.100) | -1.00- 0.00 | 0.098(0.098–0.099) | -2.00- -1.00 | ||
High (0.130) | 2.0 | 0.129(0.129–0.129) | -0.77- -0.77 | 0.128(0.127–0.128) | -2.31- -1.54 | <0.01 | |
|  | 3.0 | 0.129(0.129–0.129) | -0.77- -0.77 | 0.128(0.128–0.128) | -1.54- -1.54 | ||
CH4 | Low (0.218) | 2.0 | 0.215(0.214–0.215) | -1.83- -1.38 | 0.218(0.218–0.218) | 0.00–0.00 | <0.01 |
|  | 3.0 | 0.215(0.215–0.215) | -1.83- -1.38 | 0.218(0.218–0.218) | 0.00–0.00 | ||
Middlle (0.201) | 2.0 | 0.198(0.198–0.199) | -1.49- -1.00 | 0.201(0.200-0.203) | -0.50- 1.00 | <0.01 | |
|  | 3.0 | 0.198(0.198–0.199) | -1.49- -1.00 | 0.202(0.201–0.203) | -0.50- 1.00 | ||
High (0.159) | 2.0 | 0.157(0.157–0.157) | -1.26- -1.26 | 0.160(0.159–0.160) | 0.00- 0.63 | <0.01 | |
|  | 3.0 | 0.158(0.158–0.158) | -0.63- -0.63 | 0.160(0.159–0.160) | 0.00- 0.63 | ||