Air: 11
Con: 160-260

For New Curve (R² >= 0.9995):

for ppm = a*ratio^b:

Gas    | a       | b
H2     | 44.8077 | -0.5156
CH4    | 67.5665 | -0.6088
alcohol| 34.1956 | -0.2666
CO     | 30.3019 | -0.2336

for ppm = 10^[(log10(ratio)-b)/m]:

Gas    | m       | b
H2     | -0.5156 | 1.6514 
CH4    | -0.6088 | 1.8297 
alcohol| -0.2666 | 1.534  
CO     | -0.2336 | 1.4815 


For Old Curve:

for ppm = a*ratio^b:

Gas    | a       | b
H2     | 44.8077 | -0.5156
CH4    | 67.5665 | -0.6088
alcohol| 34.1956 | -0.2666
CO     | 30.3019 | -0.2336

for ppm = 10^[(log10(ratio)-b)/m]:

Gas    | m       | b
H2     | -0.5156 | 1.6514 
CH4    | -0.6088 | 1.8297 
alcohol| -0.2666 | 1.534  
CO     | -0.2336 | 1.4815 


H2
300,2.37
1000,1.26
3000,0.73
7000,0.47

%11.4545
[(300,2.37), (1000,1.26), (3000,0.73), (7000,0.47)]

CH4
300,2.1
1000,1
3000,0.52
7000,0.314

%9.0909
[(300,2.1), (1000,1), (3000,0.52), (7000,0.314)]

alcohol
1000,5.4
3000,4.12
7000,3.177

%49.0909
[(1000,5.4), (3000,4.12), (7000,3.177)]

CO
1000,6
3000,4.77
7000,3.76

%54.5454
[(1000,6), (3000,4.77), (7000,3.76)]
