| 11. | December natural gas rose 24.2 cents to $ 7.115 per million British thermal units.
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| 12. | November natural gas declined 21.5 cents to $ 7.89 per million British thermal units.
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| 13. | November natural gas fell 4.8 cents to $ 6.803 per million British thermal units.
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| 14. | January natural gas fell 50.5 cents to $ 6.952 per million British thermal units.
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| 15. | February natural gas fell 4.3 cents to $ 2.125 per million British thermal units.
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| 16. | January natural gas rose 12.7 cents to $ 6.923 per million British thermal units.
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| 17. | October natural gas fell 5.7 cents to $ 1.644 per million British thermal units.
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| 18. | January natural gas declined 3.6 cents to $ 6.82 per million British thermal units.
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| 19. | May natural gas gained 4.3 cents $ 1.884 for each million British thermal units.
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| 20. | November natural gas rose 9.6 cents to $ 3.064 per million British thermal units.
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