Table 4.
Repeatability test of concentration analysis using CH4 standard gas.
| Times | Concentration of CH4 (μmol/mol) |
|---|---|
| 1 | 1.11226 |
| 2 | 1.10572 |
| 3 | 1.10449 |
| 4 | 1.10930 |
| 5 | 1.09610 |
| 6 | 1.09919 |
| 7 | 1.09141 |
| 8 | 1.09956 |
| 9 | 1.09746 |
| 10 | 1.09437 |
|
| |
| Mean | 1.10099 |
| S.D. | 0.00673 |
| RSD (%) | 0.61160 |
| S.E. | 0.00213 |
| RSE (%) | 0.19340 |