|                                                                     |   | 3 Months      Ended |   |   | 12      MonthsEnded |   |    | 12 Months      Ended(2)             |   |
|--------------------------------------------------------------------------|--------|---------------------|--------|--------|---------------------|--------|---------|-------------------------------------|--------|
|                                                                     |   | Mar.      31,       |   |   | Mar.      31,       |   |    | Dec.      31,                       |   |   | Dec.      31, |   |   | Dec.      31, |   |   | Dec.      31, |   |   | Dec.      31, |   |
|                                                                     |   | 2008                |   |   | 2008                |   |    | 2007                                |   |   | 2006 |   |   | 2005 |   |   | 2004 |   |   | 2003 |   |
|                                                                     |   |                |   |   |                |   |    |  -      Thousands of Dollars - |   |
| Fixed      Charges:                                                      |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   Interest      on Long-Term Debt                              |   | $                   | 17,245 |   |                | $      | 72,351  |                                |   | $ | 73,095 |   |   | $ | 75,039 |   |   | $ | 76,762 |   |   | $ | 80,968 |   |   | $ | 80,844 |   |
|   Other      Interest (1)                                      |   |                | 1,141  |   |                |   | 4,860   |                                |   |   | 5,480 |   |   |   | 7,922 |   |   |   | 3,153 |   |   |   | 1,947 |   |   |   | 3,709 |   |
|   Interest      on Capital Lease Obligations                   |   |                | 14,336 |   |                |   | 62,683  |                                |   |   | 64,499 |   |   |   | 72,586 |   |   |   | 79,098 |   |   |   | 85,912 |   |   |   | 84,080 |   |
| Total      Fixed Charges                                                 |   | $                   | 32,722 |   |                | $      | 139,894 |                                |   | $ | 143,074 |   |   | $ | 155,547 |   |   | $ | 159,013 |   |   | $ | 168,827 |   |   | $ | 168,633 |   |
|                                                                     |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Net      Income                                                          |   |                | (2,615 | )      |                |   | 50,816  |                                |   |   | 58,373 |   |   |   | 67,447 |   |   |   | 46,144 |   |   |   | 45,919 |   |   |   | 113,941 |   |
|                                                                     |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Less:                                                                    |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|    Discontinued      Operations - Net of Tax              |   |                | -      |   |                |   | -       |                                |   |   | - |   |   |   | (1,796 | ) |   |   | (5,483 | ) |   |   | (5,063 | ) |   |   | (7,472 | ) |
|    Accounting      Change - Net of Tax                    |   |                | -      |   |                |   | -       |                                |   |   | - |   |   |   | - |   |   |   | (626 | ) |   |   | - |   |   |   | 67,471 |   |
| Net      Income/(Loss) from Continuing Operations                        |   |                | (2,615 | )      |                |   | 50,816  |                                |   |   | 58,373 |   |   |   | 69,243 |   |   |   | 52,253 |   |   |   | 50,982 |   |   |   | 53,942 |   |
|                                                                     |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Add      (Deduct):                                                       |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|   (Income)      Losses from Equity  Investees    (2) |   |                | (1,806 | )      |                |   | (1,450  | )                                   |   |   | 340 |   |   |   | (210 | ) |   |   | (2,113 | ) |   |   | (7,121 | ) |   |   | 3,051 |   |
|   Income      Taxes                                            |   |                | 210    |   |                |   | 34,998  |                                |   |   | 39,079 |   |   |   | 43,936 |   |   |   | 37,623 |   |   |   | 37,186 |   |   |   | 16,531 |   |
|   Total      Fixed Charges                                     |   |                | 32,722 |   |                |   | 139,894 |                                |   |   | 143,074 |   |   |   | 155,547 |   |   |   | 159,013 |   |   |   | 168,827 |   |   |   | 168,633 |   |
|                                                                     |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Total      Earnings before Taxes and Fixed      Charges             |   | $                   | 28,511 |   |                | $      | 224,258 |                                |   | $ | 240,866 |   |   | $ | 268,516 |   |   | $ | 246,776 |   |   | $ | 249,874 |   |   | $ | 242,157 |   |
|                                                                     |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
|                                                                     |   |                |   |   |                |   |    |                                |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Ratio      of Earnings to Fixed Charges                                  |   |                | 0.871  |   |                |   | 1.603   |                                |   |   | 1.684 |   |   |   | 1.726 |   |   |   | 1.552 |   |   |   | 1.480 |   |   |   | 1.436 |   |