| NORTHERN INDIANA PUBLIC SERVICE COMPANY | |||||||||||||
| Daily Heating Degree Days Average All Weather Zones | |||||||||||||
| Total Company | |||||||||||||
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Total | |
| Day | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 |
| 1 | 50 | 26 | 31 | 7 | 10 | 0 | 0 | 0 | 0 | 10 | 4 | 30 | |
| 2 | 45 | 28 | 31 | 1 | 5 | 3 | 0 | 0 | 0 | 13 | 23 | 19 | |
| 3 | 52 | 28 | 33 | 1 | 2 | 5 | 0 | 0 | 0 | 19 | 29 | 12 | |
| 4 | 67 | 35 | 32 | 8 | 0 | 1 | 0 | 0 | 0 | 18 | 18 | 12 | |
| 5 | 65 | 33 | 27 | 14 | 0 | 0 | 0 | 0 | 0 | 14 | 10 | 22 | |
| 6 | 49 | 26 | 43 | 13 | 5 | 0 | 0 | 0 | 0 | 14 | 19 | 32 | |
| 7 | 59 | 32 | 49 | 8 | 7 | 0 | 0 | 0 | 0 | 9 | 19 | 30 | |
| 8 | 52 | 27 | 43 | 5 | 13 | 0 | 0 | 0 | 0 | 8 | 9 | 24 | |
| 9 | 59 | 21 | 38 | 18 | 10 | 0 | 0 | 0 | 3 | 2 | 1 | 20 | |
| 10 | 61 | 20 | 40 | 17 | 3 | 0 | 0 | 0 | 3 | 1 | 6 | 28 | |
| 11 | 54 | 14 | 42 | 20 | 0 | 0 | 0 | 0 | 0 | 8 | 21 | 33 | |
| 12 | 40 | 39 | 38 | 21 | 1 | 0 | 0 | 0 | 0 | 4 | 18 | 28 | |
| 13 | 50 | 43 | 37 | 20 | 13 | 0 | 0 | 0 | 4 | 11 | 9 | 28 | |
| 14 | 55 | 35 | 33 | 15 | 7 | 0 | 0 | 0 | 6 | 16 | 19 | 28 | |
| 15 | 45 | 22 | 34 | 16 | 1 | 7 | 0 | 1 | 5 | 4 | 24 | 28 | |
| 16 | 33 | 26 | 24 | 22 | 0 | 7 | 0 | 0 | 6 | 3 | 26 | 39 | |
| 17 | 34 | 34 | 14 | 21 | 0 | 7 | 0 | 0 | 6 | 18 | 26 | 40 | |
| 18 | 33 | 34 | 28 | 21 | 7 | 3 | 0 | 0 | 2 | 21 | 12 | 42 | |
| 19 | 39 | 36 | 29 | 20 | 6 | 0 | 0 | 0 | 0 | 17 | 14 | 34 | |
| 20 | 35 | 39 | 25 | 17 | 2 | 0 | 0 | 0 | 5 | 20 | 25 | 40 | |
| 21 | 28 | 41 | 29 | 9 | 1 | 0 | 0 | 0 | 12 | 12 | 21 | 51 | |
| 22 | 22 | 42 | 32 | 7 | 5 | 0 | 0 | 0 | 9 | 17 | 9 | 44 | |
| 23 | 23 | 38 | 25 | 21 | 6 | 0 | 0 | 0 | 2 | 23 | 9 | 51 | |
| 24 | 31 | 36 | 30 | 21 | 15 | 0 | 0 | 0 | 6 | 24 | 24 | 50 | |
| 25 | 36 | 34 | 32 | 17 | 10 | 0 | 0 | 0 | 2 | 16 | 27 | 47 | |
| 26 | 32 | 33 | 29 | 12 | 10 | 0 | 0 | 0 | 0 | 16 | 23 | 35 | |
| 27 | 20 | 22 | 23 | 13 | 6 | 0 | 0 | 0 | 0 | 16 | 25 | 44 | |
| 28 | 32 | 26 | 19 | 12 | 0 | 0 | 0 | 0 | 0 | 3 | 27 | 42 | |
| 29 | 33 | 0 | 16 | 12 | 0 | 0 | 0 | 0 | 10 | 1 | 31 | 30 | |
| 30 | 32 | 0 | 9 | 9 | 0 | 0 | 0 | 3 | 9 | 1 | 31 | 29 | |
| 31 | 30 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 31 | |
| Total | 1,296 | 870 | 922 | 418 | 145 | 33 | 0 | 4 | 90 | 360 | 559 | 1,023 | 5,720 |
| Normal | 1,293 | 1,076 | 841 | 476 | 221 | 22 | 2 | 13 | 74 | 372 | 706 | 1,119 | 6,215 |
| Deviation | |||||||||||||
| From Normal | 3 | (206) | 81 | (58) | (76) | 11 | (2) | (9) | 16 | (12) | (147) | (96) | (495) |