| NGX Canadian Natural Gas Index Historical |
| Date | Index | Change | Prompt Price | Deferred Price |
| May 16, 2012 | 76.73 | 5.65 | 2.1400 | 2.2000 |
| |
| May 15, 2012 | 71.08 | 3.03 | 1.9800 | 2.0425 |
| May 14, 2012 | 68.05 | -2.72 | 1.8950 | 1.9575 |
| May 13, 2012 | 70.77 | 0.00 | 1.9700 | 2.0400 |
| May 12, 2012 | 70.77 | 0.00 | 1.9700 | 2.0400 |
| May 11, 2012 | 70.77 | 0.63 | 1.9700 | 2.0400 |
| May 10, 2012 | 70.14 | 0.54 | 1.9525 | 2.0175 |
| May 09, 2012 | 69.60 | 3.50 | 1.9375 | 2.0100 |
| May 08, 2012 | 66.10 | 1.62 | 1.8400 | 1.9075 |
| May 07, 2012 | 64.48 | 1.35 | 1.7950 | 1.8550 |
| May 06, 2012 | 63.14 | 0.00 | 1.7575 | 1.8200 |
| May 05, 2012 | 63.14 | 0.00 | 1.7575 | 1.8200 |
| May 04, 2012 | 63.14 | -1.80 | 1.7575 | 1.8200 |
| May 03, 2012 | 64.93 | 3.41 | 1.8075 | 1.8675 |
| May 02, 2012 | 61.52 | -3.68 | 1.7125 | 1.7750 |
| May 01, 2012 | 65.20 | 2.60 | 1.8150 | 1.8800 |
| Apr 30, 2012 | 62.60 | 2.42 | 1.6900 | 1.7425 |
| Apr 29, 2012 | 60.17 | 0.00 | 1.6350 | 1.6750 |
| Apr 28, 2012 | 60.17 | 0.00 | 1.6350 | 1.6750 |
| Apr 27, 2012 | 60.17 | 2.42 | 1.6350 | 1.6750 |
| Apr 26, 2012 | 57.75 | -0.99 | 1.5600 | 1.6075 |
| Apr 25, 2012 | 58.73 | 3.41 | 1.5750 | 1.6350 |
| Apr 24, 2012 | 55.32 | -1.62 | 1.4950 | 1.5400 |
| Apr 23, 2012 | 56.94 | 3.23 | 1.5350 | 1.5850 |
| Apr 22, 2012 | 53.70 | 0.00 | 1.4475 | 1.4950 |
| Apr 21, 2012 | 53.70 | 0.00 | 1.4475 | 1.4950 |
| Apr 20, 2012 | 53.70 | -0.79 | 1.4475 | 1.4950 |
| Apr 19, 2012 | 54.50 | -1.09 | 1.4675 | 1.5175 |
| Apr 18, 2012 | 55.59 | 1.14 | 1.4975 | 1.5475 |
| Apr 17, 2012 | 54.44 | -1.07 | 1.4650 | 1.5175 |
| Apr 16, 2012 | 55.51 | 0.97 | 1.4950 | 1.5450 |
| Apr 15, 2012 | 54.54 | 0.00 | 1.4675 | 1.5225 |
| Apr 14, 2012 | 54.54 | 0.00 | 1.4675 | 1.5225 |
| Apr 13, 2012 | 54.54 | -1.39 | 1.4675 | 1.5225 |
| Apr 12, 2012 | 55.93 | -2.51 | 1.5050 | 1.5600 |
| Apr 11, 2012 | 58.44 | -1.67 | 1.5725 | 1.6125 |
| Apr 10, 2012 | 60.11 | -1.30 | 1.6175 | 1.6575 |
| Apr 09, 2012 | 61.41 | 1.21 | 1.6525 | 1.6925 |
| Apr 08, 2012 | 60.20 | 0.00 | 1.6200 | 1.6650 |
| Apr 07, 2012 | 60.20 | 0.00 | 1.6200 | 1.6650 |
| Apr 06, 2012 | 60.20 | 0.00 | 1.6200 | 1.6650 |
| Apr 05, 2012 | 60.20 | -3.16 | 1.6200 | 1.6650 |
| Apr 04, 2012 | 63.36 | -1.67 | 1.7050 | 1.7525 |
| Apr 03, 2012 | 65.04 | 1.77 | 1.7500 | 1.8075 |
| Apr 02, 2012 | 63.27 | 0.56 | 1.7025 | 1.7650 |
| Apr 01, 2012 | 62.71 | 0.00 | 1.6875 | 1.7450 |
| Mar 31, 2012 | 62.71 | 0.00 | 1.6250 | 1.6875 |
| Mar 30, 2012 | 62.71 | 1.02 | 1.6250 | 1.6875 |
| Mar 29, 2012 | 61.69 | -2.88 | 1.6200 | 1.6600 |
| Mar 28, 2012 | 64.57 | -0.19 | 1.6775 | 1.7375 |
| Mar 27, 2012 | 64.76 | -1.67 | 1.6925 | 1.7425 |
| Mar 26, 2012 | 66.43 | -2.79 | 1.7325 | 1.7875 |
| Mar 25, 2012 | 69.22 | 0.00 | 1.8075 | 1.8625 |
| Mar 24, 2012 | 69.22 | 0.00 | 1.8075 | 1.8625 |
| Mar 23, 2012 | 69.22 | 0.16 | 1.8075 | 1.8625 |
| Mar 22, 2012 | 69.05 | -2.04 | 1.8075 | 1.8575 |
| Mar 21, 2012 | 71.09 | 1.26 | 1.8675 | 1.9100 |
| Mar 20, 2012 | 69.84 | 0.10 | 1.8325 | 1.8775 |
| Mar 19, 2012 | 69.74 | 0.52 | 1.8250 | 1.8800 |
| Mar 18, 2012 | 69.21 | 0.00 | 1.8075 | 1.8725 |
| Mar 17, 2012 | 69.21 | 0.00 | 1.8075 | 1.8725 |
| Mar 16, 2012 | 69.21 | -0.38 | 1.8075 | 1.8725 |
| Mar 15, 2012 | 69.59 | 0.56 | 1.8150 | 1.8900 |
| Mar 14, 2012 | 69.03 | 2.01 | 1.8000 | 1.8775 |
| Mar 13, 2012 | 67.02 | 1.05 | 1.7475 | 1.8025 |
| Mar 12, 2012 | 65.96 | -0.58 | 1.7200 | 1.7625 |
| Mar 11, 2012 | 66.54 | 0.00 | 1.7350 | 1.7750 |
| Mar 10, 2012 | 66.54 | 0.00 | 1.7350 | 1.7750 |
| Mar 09, 2012 | 66.54 | 2.88 | 1.7350 | 1.7750 |
| Mar 08, 2012 | 63.66 | -1.15 | 1.6600 | 1.6950 |
| Mar 07, 2012 | 64.81 | -2.49 | 1.6900 | 1.7300 |
| Mar 06, 2012 | 67.30 | 1.34 | 1.7550 | 1.8050 |
| Mar 05, 2012 | 65.96 | -3.16 | 1.7200 | 1.7650 |
| Mar 04, 2012 | 69.13 | 0.00 | 1.8025 | 1.8425 |
| Mar 03, 2012 | 69.13 | 0.00 | 1.8025 | 1.8425 |
| Mar 02, 2012 | 69.13 | 0.29 | 1.8025 | 1.8425 |
| Mar 01, 2012 | 68.84 | -5.75 | 1.7950 | 1.8375 |
| Feb 29, 2012 | 74.59 | 3.16 | 1.8850 | 1.9450 |
| Feb 28, 2012 | 71.43 | -2.88 | 1.8075 | 1.8625 |
| Feb 27, 2012 | 74.30 | -2.59 | 1.8575 | 1.9375 |
| Feb 26, 2012 | 76.89 | 0.00 | 1.9400 | 2.0050 |
| Feb 25, 2012 | 76.89 | 0.00 | 1.9400 | 2.0050 |
| Feb 24, 2012 | 76.89 | -2.78 | 1.9400 | 2.0050 |
| Feb 23, 2012 | 79.67 | -1.73 | 2.0150 | 2.0775 |
| Feb 22, 2012 | 81.40 | -0.79 | 2.0675 | 2.1225 |
| Feb 21, 2012 | 82.19 | -2.05 | 2.0750 | 2.1450 |
| Feb 20, 2012 | 84.24 | 0.00 | 2.1300 | 2.1975 |
| Feb 19, 2012 | 84.24 | 0.00 | 2.1300 | 2.1975 |
| Feb 18, 2012 | 84.24 | 0.00 | 2.1300 | 2.1975 |
| Feb 17, 2012 | 84.24 | 3.57 | 2.1300 | 2.1975 |
| Feb 16, 2012 | 80.67 | 2.05 | 2.0425 | 2.1025 |
| Feb 15, 2012 | 78.62 | -4.09 | 1.9775 | 2.0625 |
| Feb 14, 2012 | 82.71 | 2.12 | 2.0875 | 2.1575 |
| Feb 13, 2012 | 80.59 | -2.50 | 2.0300 | 2.1150 |
| Feb 12, 2012 | 83.09 | 0.00 | 2.0950 | 2.1650 |
| Feb 11, 2012 | 83.09 | 0.00 | 2.0950 | 2.1650 |
| Feb 10, 2012 | 83.09 | 0.99 | 2.0950 | 2.1650 |
| Feb 09, 2012 | 82.09 | 0.99 | 2.0700 | 2.1325 |
| Feb 08, 2012 | 81.10 | -0.59 | 2.0450 | 2.0900 |
| Feb 07, 2012 | 81.70 | -3.77 | 2.0600 | 2.1075 |
| Feb 06, 2012 | 85.47 | 1.09 | 2.1550 | 2.2225 |
| Feb 05, 2012 | 84.37 | 0.00 | 2.1275 | 2.1925 |
| Feb 04, 2012 | 84.37 | 0.00 | 2.1275 | 2.1925 |
| Feb 03, 2012 | 84.37 | -1.09 | 2.1275 | 2.1925 |
| Feb 02, 2012 | 85.47 | 7.24 | 2.1550 | 2.2225 |
| Feb 01, 2012 | 78.23 | -4.56 | 1.9725 | 2.0375 |
| Jan 31, 2012 | 82.79 | -7.34 | 2.0225 | 2.0875 |
| Jan 30, 2012 | 90.13 | -2.08 | 2.2175 | 2.2725 |
| Jan 29, 2012 | 92.21 | 0.00 | 2.2625 | 2.3250 |
| Jan 28, 2012 | 92.21 | 0.00 | 2.2625 | 2.3250 |
| Jan 27, 2012 | 92.21 | 1.49 | 2.2625 | 2.3250 |
| Jan 26, 2012 | 90.72 | -6.05 | 2.2475 | 2.2875 |
| Jan 25, 2012 | 96.77 | 4.66 | 2.4200 | 2.4400 |
| Jan 24, 2012 | 92.11 | 1.08 | 2.3025 | 2.3225 |
| Jan 23, 2012 | 91.03 | 5.27 | 2.2775 | 2.2950 |
| Jan 22, 2012 | 85.76 | 0.00 | 2.1525 | 2.1600 |
| Jan 21, 2012 | 85.76 | 0.00 | 2.1525 | 2.1600 |
| Jan 20, 2012 | 85.76 | 1.75 | 2.1525 | 2.1600 |
| Jan 19, 2012 | 84.01 | -4.62 | 2.1100 | 2.1150 |
| Jan 18, 2012 | 88.63 | -0.96 | 2.2250 | 2.2325 |
| Jan 17, 2012 | 89.59 | -8.11 | 2.2500 | 2.2550 |
| Jan 16, 2012 | 97.70 | 0.00 | 2.4525 | 2.4625 |
| Jan 15, 2012 | 97.70 | 0.00 | 2.4525 | 2.4625 |
| Jan 14, 2012 | 97.70 | 0.00 | 2.4525 | 2.4625 |
| Jan 13, 2012 | 97.70 | -0.60 | 2.4525 | 2.4625 |
| Jan 12, 2012 | 98.30 | -2.69 | 2.4675 | 2.4775 |
| Jan 11, 2012 | 100.99 | -4.78 | 2.5350 | 2.5350 |
| Jan 10, 2012 | 105.77 | -2.19 | 2.6550 | 2.6550 |
| Jan 09, 2012 | 107.96 | -0.90 | 2.7100 | 2.7125 |
| Jan 08, 2012 | 108.85 | 0.00 | 2.7325 | 2.7450 |
| Jan 07, 2012 | 108.85 | 0.00 | 2.7325 | 2.7450 |
| Jan 06, 2012 | 108.85 | 3.19 | 2.7325 | 2.7450 |
| Jan 05, 2012 | 105.67 | -3.98 | 2.6525 | 2.6700 |
| Jan 04, 2012 | 109.65 | 3.59 | 2.7525 | 2.7625 |
| Jan 03, 2012 | 106.07 | 1.39 | 2.6625 | 2.6675 |
| Jan 02, 2012 | 104.67 | 0.00 | 2.6275 | 2.6325 |
| Jan 01, 2012 | 104.67 | 0.00 | 2.6275 | 2.6325 |