| 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 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 | 1999 |
| 1 | 51 | 25 | 28 | 2 | 11 | 0 | 0 | 0 | 0 | 7 | 6 | 27 | |
| 2 | 48 | 28 | 28 | 0 | 3 | 5 | 0 | 0 | 0 | 16 | 26 | 15 | |
| 3 | 58 | 29 | 36 | 0 | 0 | 10 | 0 | 0 | 0 | 17 | 27 | 13 | |
| 4 | 72 | 38 | 29 | 8 | 0 | 0 | 0 | 0 | 0 | 18 | 13 | 14 | |
| 5 | 63 | 30 | 28 | 10 | 0 | 0 | 0 | 0 | 0 | 9 | 11 | 28 | |
| 6 | 56 | 25 | 44 | 17 | 12 | 0 | 0 | 0 | 0 | 13 | 19 | 33 | |
| 7 | 60 | 33 | 42 | 2 | 12 | 0 | 0 | 0 | 0 | 3 | 13 | 28 | |
| 8 | 51 | 27 | 38 | 12 | 15 | 0 | 0 | 0 | 0 | 5 | 2 | 23 | |
| 9 | 61 | 18 | 36 | 21 | 14 | 0 | 0 | 0 | 5 | 1 | 0 | 22 | |
| 10 | 58 | 15 | 35 | 16 | 1 | 0 | 0 | 0 | 2 | 1 | 7 | 32 | |
| 11 | 55 | 18 | 33 | 23 | 0 | 0 | 0 | 0 | 0 | 5 | 22 | 30 | |
| 12 | 42 | 42 | 32 | 20 | 3 | 0 | 0 | 0 | 0 | 0 | 15 | 27 | |
| 13 | 50 | 38 | 32 | 21 | 18 | 0 | 0 | 0 | 7 | 15 | 5 | 24 | |
| 14 | 51 | 29 | 32 | 13 | 13 | 0 | 0 | 0 | 5 | 10 | 22 | 29 | |
| 15 | 40 | 19 | 27 | 20 | 1 | 5 | 0 | 0 | 2 | 0 | 20 | 32 | |
| 16 | 33 | 31 | 18 | 23 | 0 | 3 | 0 | 0 | 6 | 6 | 25 | 41 | |
| 17 | 30 | 38 | 16 | 20 | 0 | 7 | 0 | 0 | 5 | 18 | 22 | 37 | |
| 18 | 38 | 32 | 26 | 20 | 10 | 0 | 0 | 0 | 0 | 19 | 6 | 37 | |
| 19 | 39 | 35 | 30 | 17 | 6 | 0 | 0 | 0 | 0 | 16 | 16 | 33 | |
| 20 | 28 | 37 | 20 | 14 | 0 | 0 | 0 | 0 | 6 | 19 | 26 | 51 | |
| 21 | 27 | 40 | 30 | 12 | 2 | 0 | 0 | 0 | 12 | 6 | 21 | 52 | |
| 22 | 22 | 37 | 31 | 13 | 14 | 0 | 0 | 0 | 3 | 18 | 8 | 54 | |
| 23 | 29 | 36 | 21 | 26 | 8 | 0 | 0 | 0 | 0 | 23 | 13 | 53 | |
| 24 | 30 | 34 | 30 | 25 | 18 | 0 | 0 | 0 | 8 | 22 | 26 | 50 | |
| 25 | 39 | 30 | 26 | 15 | 10 | 0 | 0 | 0 | 0 | 11 | 25 | 43 | |
| 26 | 30 | 27 | 26 | 12 | 9 | 0 | 0 | 0 | 0 | 14 | 22 | 37 | |
| 27 | 20 | 22 | 17 | 16 | 0 | 0 | 0 | 0 | 0 | 10 | 24 | 46 | |
| 28 | 32 | 28 | 18 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 25 | 41 | |
| 29 | 31 | 0 | 11 | 17 | 0 | 0 | 0 | 0 | 12 | 0 | 33 | 29 | |
| 30 | 32 | 0 | 0 | 9 | 0 | 0 | 0 | 3 | 7 | 0 | 28 | 31 | |
| 31 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 29 | |
| Total | 1,306 | 841 | 820 | 440 | 180 | 30 | 0 | 3 | 80 | 305 | 528 | 1,041 | 5,574 |
| Normal | 1,280 | 1,053 | 818 | 466 | 212 | 23 | 0 | 8 | 57 | 332 | 684 | 1,110 | 6,043 |
| Deviation | |||||||||||||
| From Normal | 26 | (212) | 2 | (26) | (32) | 7 | 0 | (5) | 23 | (27) | (156) | (69) | (469) |
| Zone 1= Hammond, Gary, Crown Point, Hobart, Monticello | |||||||||||||