Natural gas sample

Methane (CH4)% = a

Ethane (C2H6)% = b

Propane (C3H8)% = c

Butane (C4H10)% = d

Other incombustibles = e

A (2008)

93.90

3.60

1.30

1.20

0.00

B (2009)

91.35

4.00

2.8

1.22

0.63

C (2010)

90.44

4.50

3.40

0.70

0.96

D (2011)

87.50

5.75

3.90

1.63

1.22

E (2012)

85.60

7.40

4.50

1.30

1.20

F (2013)

83.00

7.9

5.00

2.20

1.90

G (2014)

79.70

8.50

4.80

2.50

4.50

H (2015)

78.73

11.19

4.25

2.85

2.13

I (2016)

78.73

11.77

5.97

1.40

2.13