(revised)Top North American Gas Marketers (Bcf/d)

Company

3Q2006

3Q2005

Change

ConocoPhillips

13.60

12.20

11%

Sempra

11.80

11.70

1%

Coral

11.60

9.80

18%

Chevron

8.34

6.14

36%

Constellation

8.15

5.12

59%

Louis Dreyfus

5.66

4.25

33%

Nexen

5.53

5.04

10%

UBS

4.93

4.57

8%

Tenaska

4.30

4.40

-2%

EnCana

3.40

3.20

6%

Oneok

3.02

3.02

0%

Williams

2.55

2.34

9%

ExxonMobil

2.50

2.50

0%

Devon

2.35

2.24

5%

Sequent

2.30

2.30

0%

Merrill Lynch

2.10

2.10

0%

Anadarko

1.74

1.44

21%

Enserco

1.67

1.52

10%

Chesapeake

1.54

1.23

25%

Total

97.08

85.11

14%

Source: Quarterly financial reports with the Securities and Exchange Commission, or if necessary, statements signed by company officials and provided to NGI.

Companies providing data directly to NGI include Cinergy, ConocoPhillips, Constellation, Coral, Louis Dreyfus, Merrill Lynch, Tenaska and UBS. Fortis, which bought the Duke/Cinergy marketing arm, did not have figures available for the quarter. Cinergy reported 5.05 Bcf/d in gas sales in 2Q2006 and 5.38 Bcf/d in gas sales in 3Q2005. BP plc, which resumed reporting to this survey for 4Q2007, is believed to be the largest North American Gas Marketer by a wide margin.