Air: 9.8
Con: 200-10000

For New Curve (R² >= 0.9995):

for ppm = a*ratio^b:

Gas     | a       | b
LPG     | 17.6135 | -0.4539
propane | 19.5575 | -0.461 
i-butane| 25.7473 | -0.4731
alcohol | 19.2641 | -0.3604
CH4     | 20.7074 | -0.36  
smoke   | 26.4698 | -0.3876
CO      | 28.024  | -0.3182

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

Gas     | m       | b
LPG     | -0.4539 | 1.2458 
propane | -0.461  | 1.2913 
i-butane| -0.4731 | 1.4107 
alcohol | -0.3604 | 1.2847 
CH4     | -0.36   | 1.3161 
smoke   | -0.3876 | 1.4228 
CO      | -0.3182 | 1.4475 


For Old Curve:

for ppm = a*ratio^b:

Gas     | a       | b
LPG     | 17.6135 | -0.4539
propane | 19.176  | -0.4578
i-butane| 25.0068 | -0.4678
alcohol | 19.2641 | -0.3604
CH4     | 20.7074 | -0.36  
smoke   | 26.4698 | -0.3876
CO      | 28.024  | -0.3182

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

Gas     | m       | b
LPG     | -0.4539 | 1.2458 
propane | -0.4578 | 1.2828 
i-butane| -0.4678 | 1.3981 
alcohol | -0.3604 | 1.2847 
CH4     | -0.36   | 1.3161 
smoke   | -0.3876 | 1.4228 
CO      | -0.3182 | 1.4475 


LPG
200,1.6
500,1
800,0.87
1000,0.78
1500,0.65
2000,0.57
3000,0.46
5000,0.36
10000,0.26

%7.96
[(200,1.6), (500,1), (800,0.87), (1000,0.78), (1500,0.65), (2000,0.57), (3000,0.46), (5000,0.36), (10000,0.26)]

propane
200,1.7
500,1.1
800,0.9
1000,0.82
1500,0.68
2000,0.59
3000,0.49
5000,0.39
10000,0.28

%8.38
[(200,1.7), (500,1.1), (800,0.9), (1000,0.82), (1500,0.68), (2000,0.59), (3000,0.49), (5000,0.39), (10000,0.28)]

i-butane
200,2.1
500,1.35
800,1.1
1000,1
1500,0.825
2000,0.71
3000,0.59
5000,0.465
10000,0.33

%10.2
[(200,2.1), (500,1.35), (800,1.1), (1000,1), (1500,0.825), (2000,0.71), (3000,0.59), (5000,0.465), (10000,0.33)]

alcohol
200,2.85
500,2.036
800,1.74
1000,1.6
1500,1.4
2000,1.25
3000,1.1
5000,0.88
10000,0.66

%16.33
[(200,2.85), (500,2.036), (800,1.74), (1000,1.6), (1500,1.4), (2000,1.25), (3000,1.1), (5000,0.88), (10000,0.66)]

CH4
200,3.05
500,2.2
800,1.9
1000,1.75
1500,1.5
2000,1.37
3000,1.16
5000,0.935
10000,0.69

%17.86
[(200,3.05), (500,2.2), (800,1.9), (1000,1.75), (1500,1.5), (2000,1.37), (3000,1.16), (5000,0.935), (10000,0.69)]
