| NORTHERN INDIANA PUBLIC SERVICE COMPANY | |||||||||||||
| Daily Cooling Degree Days Average All Weather Zones | |||||||||||||
| Total Company | |||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
| Day | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 | 1997 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 8 | 7 | 0 | 0 | 0 | |
| 2 | 0 | 0 | 0 | 0 | 0 | 0 | 14 | 12 | 5 | 0 | 0 | 0 | |
| 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 | 0 | 7 | 0 | 0 | |
| 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 | 4 | 0 | 0 | |
| 5 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 6 | 0 | 0 | |
| 6 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 1 | 7 | 7 | 0 | 0 | |
| 7 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 3 | 4 | 8 | 0 | 0 | |
| 8 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 6 | 2 | 7 | 0 | 0 | |
| 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 1 | 0 | 0 | |
| 10 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 7 | 0 | 0 | 0 | 0 | |
| 11 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | |
| 12 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 7 | 0 | 2 | 0 | 0 | |
| 13 | 0 | 0 | 0 | 0 | 0 | 5 | 14 | 2 | 1 | 0 | 0 | 0 | |
| 14 | 0 | 0 | 0 | 0 | 0 | 1 | 16 | 2 | 3 | 0 | 0 | 0 | |
| 15 | 0 | 0 | 0 | 0 | 0 | 3 | 12 | 11 | 6 | 0 | 0 | 0 | |
| 16 | 0 | 0 | 0 | 0 | 0 | 3 | 16 | 15 | 10 | 0 | 0 | 0 | |
| 17 | 0 | 0 | 0 | 0 | 0 | 1 | 16 | 6 | 5 | 0 | 0 | 0 | |
| 18 | 0 | 0 | 0 | 0 | 1 | 6 | 14 | 0 | 5 | 0 | 0 | 0 | |
| 19 | 0 | 0 | 0 | 0 | 0 | 12 | 9 | 1 | 7 | 0 | 0 | 0 | |
| 20 | 0 | 0 | 0 | 0 | 0 | 14 | 10 | 1 | 0 | 0 | 0 | 0 | |
| 21 | 0 | 0 | 0 | 0 | 0 | 11 | 8 | 0 | 0 | 0 | 0 | 0 | |
| 22 | 0 | 0 | 0 | 0 | 0 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | |
| 23 | 0 | 0 | 0 | 0 | 0 | 16 | 5 | 1 | 0 | 0 | 0 | 0 | |
| 24 | 0 | 0 | 0 | 0 | 0 | 17 | 9 | 3 | 0 | 0 | 0 | 0 | |
| 25 | 0 | 0 | 0 | 0 | 0 | 15 | 12 | 2 | 1 | 0 | 0 | 0 | |
| 26 | 0 | 0 | 0 | 0 | 0 | 7 | 19 | 6 | 0 | 0 | 0 | 0 | |
| 27 | 0 | 0 | 0 | 0 | 0 | 7 | 17 | 9 | 1 | 0 | 0 | 0 | |
| 28 | 0 | 0 | 0 | 0 | 0 | 10 | 9 | 3 | 0 | 0 | 0 | 0 | |
| 29 | 0 | 0 | 0 | 0 | 0 | 12 | 2 | 1 | 1 | 0 | 0 | 0 | |
| 30 | 0 | 0 | 0 | 0 | 0 | 11 | 2 | 3 | 0 | 0 | 0 | 0 | |
| 31 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 0 | 0 | 0 | |
| Total | 0 | 0 | 0 | 0 | 1 | 173 | 259 | 140 | 65 | 43 | 0 | 0 | 682 |
| Normal | 0 | 0 | 0 | 0 | 64 | 165 | 272 | 218 | 72 | 12 | 0 | 0 | 803 |
| Deviation | |||||||||||||
| From Normal | 0 | 0 | 0 | 0 | (63) | 8 | (12) | (78) | (7) | 31 | 0 | 0 | (121) |