Table 7: Correspondence between gas ratio range and code using Rogers ratio method.

Ratio range>0.1, <1.0≥1.0, <3.0≥3.0≤0.1
Code0123

Ratio range<1.0≥1.0
Code01

Ratio range<1.0≥1.0, <3.0≥3.0
Code012

Ratio range<0.5≥0.5, <3.0≥3
Code012