| NORTHERN INDIANA PUBLIC SERVICE COMPANY | |||||||||||||
| Daily Heating Degree Days HAMMOND Weather Zone | |||||||||||||
| ZONE 1 | |||||||||||||
| 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 | 19 | 28 | 20 | 13 | 13 | 8 | 0 | 0 | 0 | 15 | 19 | 29 | |
| 2 | 18 | 31 | 31 | 5 | 17 | 10 | 0 | 0 | 0 | 0 | 27 | 28 | |
| 3 | 14 | 30 | 24 | 2 | 18 | 6 | 0 | 0 | 6 | 0 | 30 | 30 | |
| 4 | 21 | 31 | 25 | 0 | 8 | 5 | 3 | 0 | 6 | 0 | 29 | 35 | |
| 5 | 21 | 35 | 35 | 8 | 6 | 0 | 0 | 3 | 0 | 0 | 22 | 40 | |
| 6 | 47 | 39 | 36 | 27 | 7 | 4 | 0 | 0 | 0 | 0 | 20 | 36 | |
| 7 | 45 | 35 | 24 | 31 | 7 | 5 | 0 | 0 | 0 | 0 | 20 | 37 | |
| 8 | 40 | 34 | 30 | 36 | 6 | 5 | 0 | 0 | 0 | 0 | 22 | 37 | |
| 9 | 48 | 35 | 24 | 34 | 16 | 0 | 2 | 0 | 0 | 5 | 23 | 34 | |
| 10 | 61 | 38 | 20 | 29 | 10 | 0 | 0 | 0 | 3 | 9 | 29 | 30 | |
| 11 | 66 | 41 | 31 | 30 | 7 | 0 | 0 | 1 | 5 | 0 | 38 | 32 | |
| 12 | 63 | 45 | 27 | 28 | 14 | 0 | 0 | 0 | 0 | 0 | 36 | 38 | |
| 13 | 56 | 40 | 28 | 25 | 19 | 0 | 0 | 0 | 0 | 19 | 32 | 38 | |
| 14 | 47 | 42 | 43 | 17 | 16 | 11 | 0 | 0 | 0 | 24 | 30 | 32 | |
| 15 | 48 | 39 | 43 | 10 | 21 | 0 | 0 | 0 | 0 | 17 | 38 | 30 | |
| 16 | 66 | 39 | 23 | 25 | 9 | 0 | 0 | 0 | 0 | 17 | 43 | 28 | |
| 17 | 64 | 22 | 19 | 24 | 11 | 2 | 0 | 0 | 0 | 19 | 38 | 23 | |
| 18 | 56 | 19 | 29 | 19 | 0 | 0 | 0 | 1 | 0 | 17 | 34 | 26 | |
| 19 | 36 | 28 | 22 | 17 | 11 | 0 | 0 | 0 | 0 | 12 | 35 | 22 | |
| 20 | 31 | 21 | 10 | 14 | 13 | 0 | 0 | 0 | 7 | 21 | 24 | 31 | |
| 21 | 23 | 35 | 12 | 23 | 17 | 0 | 0 | 2 | 7 | 24 | 28 | 32 | |
| 22 | 34 | 33 | 28 | 22 | 13 | 0 | 0 | 3 | 4 | 26 | 32 | 32 | |
| 23 | 35 | 39 | 33 | 20 | 0 | 0 | 0 | 0 | 10 | 19 | 41 | 31 | |
| 24 | 43 | 42 | 20 | 17 | 0 | 0 | 0 | 0 | 4 | 20 | 33 | 31 | |
| 25 | 59 | 30 | 26 | 15 | 13 | 0 | 0 | 0 | 0 | 20 | 14 | 36 | |
| 26 | 45 | 29 | 9 | 10 | 11 | 0 | 0 | 0 | 7 | 28 | 24 | 37 | |
| 27 | 51 | 28 | 2 | 16 | 4 | 0 | 0 | 0 | 0 | 32 | 23 | 39 | |
| 28 | 56 | 17 | 10 | 6 | 5 | 0 | 0 | 0 | 4 | 22 | 15 | 36 | |
| 29 | 47 | 0 | 23 | 1 | 4 | 0 | 0 | 0 | 0 | 16 | 17 | 40 | |
| 30 | 34 | 0 | 29 | 14 | 3 | 0 | 0 | 0 | 7 | 10 | 24 | 42 | |
| 31 | 27 | 0 | 24 | 0 | 6 | 0 | 0 | 0 | 0 | 7 | 0 | 44 | |
| Total | 1,321 | 925 | 760 | 538 | 305 | 56 | 5 | 10 | 70 | 399 | 840 | 1,036 | 6,265 |
| Normal | 1,280 | 1,053 | 818 | 466 | 212 | 23 | 0 | 8 | 57 | 332 | 684 | 1,110 | 6,043 |
| Deviation | |||||||||||||
| From Normal | 41 | (128) | (58) | 72 | 93 | 33 | 5 | 2 | 13 | 67 | 156 | (74) | 222 |
| Zone 1= Hammond, Gary, Crown Point, Hobart, Monticello | |||||||||||||