Number

Real ethanol gas concentration (%)

Average voltage (V)

Predicted ethanol gas concentration (%)

Relative error (%)

1

5

4.655

5.29

5.8

2

15

4.472

15.51

3.4

3

25

4.325

23.73

-5.08

4

35

4.135

34.34

-1.89

5

45

3.923

46.18

2.62

6

55

3.765

55.01

0.182

7

65

3.569

65.96

1.48

8

75

3.425

74

1.33