| 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 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 | 1998 |
| 1 | 36 | 27 | 30 | 20 | 7 | 1 | 0 | 0 | 1 | 13 | 13 | 20 | |
| 2 | 21 | 28 | 32 | 20 | 9 | 2 | 0 | 0 | 0 | 15 | 20 | 12 | |
| 3 | 16 | 33 | 31 | 24 | 10 | 11 | 0 | 0 | 0 | 14 | 26 | 5 | |
| 4 | 15 | 35 | 31 | 22 | 5 | 8 | 0 | 0 | 0 | 9 | 30 | 4 | |
| 5 | 14 | 35 | 32 | 23 | 3 | 14 | 0 | 0 | 0 | 2 | 29 | 7 | |
| 6 | 17 | 33 | 29 | 17 | 0 | 13 | 0 | 0 | 0 | 0 | 29 | 12 | |
| 7 | 24 | 32 | 27 | 13 | 4 | 8 | 0 | 0 | 1 | 6 | 28 | 24 | |
| 8 | 29 | 32 | 26 | 13 | 6 | 7 | 0 | 0 | 6 | 13 | 27 | 27 | |
| 9 | 34 | 29 | 34 | 21 | 5 | 5 | 0 | 0 | 4 | 13 | 20 | 27 | |
| 10 | 44 | 26 | 44 | 20 | 6 | 0 | 0 | 0 | 2 | 11 | 15 | 30 | |
| 11 | 44 | 23 | 47 | 14 | 4 | 0 | 0 | 0 | 0 | 8 | 25 | 28 | |
| 12 | 38 | 30 | 47 | 7 | 1 | 0 | 0 | 0 | 0 | 7 | 23 | 29 | |
| 13 | 49 | 33 | 37 | 4 | 0 | 0 | 0 | 0 | 0 | 16 | 19 | 28 | |
| 14 | 46 | 28 | 35 | 11 | 0 | 0 | 0 | 0 | 0 | 15 | 16 | 29 | |
| 15 | 36 | 23 | 38 | 11 | 0 | 0 | 0 | 0 | 0 | 10 | 23 | 23 | |
| 16 | 39 | 25 | 33 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 29 | |
| 17 | 40 | 24 | 28 | 20 | 0 | 0 | 0 | 0 | 0 | 1 | 24 | 31 | |
| 18 | 44 | 27 | 18 | 17 | 0 | 0 | 0 | 0 | 0 | 10 | 19 | 26 | |
| 19 | 42 | 27 | 24 | 15 | 0 | 0 | 0 | 0 | 0 | 13 | 22 | 27 | |
| 20 | 40 | 28 | 31 | 12 | 0 | 0 | 0 | 0 | 0 | 16 | 32 | 31 | |
| 21 | 36 | 27 | 31 | 14 | 1 | 0 | 0 | 0 | 0 | 20 | 29 | 38 | |
| 22 | 35 | 24 | 30 | 11 | 5 | 0 | 0 | 0 | 5 | 21 | 19 | 52 | |
| 23 | 36 | 25 | 29 | 8 | 2 | 0 | 0 | 0 | 10 | 16 | 16 | 51 | |
| 24 | 36 | 25 | 27 | 6 | 3 | 0 | 0 | 0 | 8 | 13 | 21 | 47 | |
| 25 | 35 | 24 | 17 | 6 | 5 | 0 | 0 | 0 | 0 | 8 | 21 | 43 | |
| 26 | 32 | 16 | 1 | 15 | 2 | 0 | 0 | 0 | 0 | 5 | 18 | 40 | |
| 27 | 30 | 20 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 3 | 17 | 33 | |
| 28 | 29 | 21 | 6 | 16 | 0 | 0 | 0 | 0 | 2 | 12 | 11 | 35 | |
| 29 | 30 | 0 | 3 | 11 | 0 | 0 | 0 | 0 | 1 | 13 | 4 | 42 | |
| 30 | 33 | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 1 | 9 | 12 | 52 | |
| 31 | 30 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 52 | |
| Total | 1,030 | 760 | 804 | 435 | 78 | 69 | 0 | 0 | 41 | 320 | 626 | 934 | 5,097 |
| Normal | 1,293 | 1,076 | 841 | 476 | 221 | 22 | 2 | 13 | 74 | 372 | 706 | 1,119 | 6,215 |
| Deviation | |||||||||||||
| From Normal | (263) | (316) | (37) | (41) | (143) | 47 | (2) | (13) | (33) | (52) | (80) | (185) | (1,118) |