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
Day	2007	2007	2007	2007	2007	2007	2007	2007	2007	2007	2007	2007	Total
1	33	46	29	11	2	0	0	0	0	3	26	31	181.6667
2	30	57	37	8	10	0	0	0	0	0	19	28	188.6667
3	24	64	42	13	6	0	0	0	0	4	21	37	211
4	18	66	37	36	2	6	0	0	0	0	20	37	222.6667
5	19	66	45	36	7	9	0	0	0	0	22	48	252
6	31	59	44	38	10	0	0	0	0	0	27	41	250
7	32	60	43	37	0	0	0	0	0	0	28	36	236.3333
8	32	61	34	32	0	1	0	0	0	0	23	36	218.6667
9	38	56	19	33	0	0	0	0	0	5	25	34	210.6667
10	34	57	25	24	0	0	0	0	1	17	22	31	211
11	21	41	23	27	8	0	0	0	6	15	15	31	187
12	24	40	15	29	9	0	0	0	9	20	15	32	192.6667
13	33	51	1	23	5	0	0	0	0	10	11	34	168.6667
14	32	54	19	29	0	0	0	0	10	9	20	36	209
15	37	60	32	22	3	0	0	0	16	0	31	39	240
16	47	53	35	21	15	0	0	0	8	5	29	43	256.3333
17	42	45	37	12	17	0	0	0	0	0	27	44	224
18	37	49	27	18	6	0	0	2	0	0	26	33	198
19	42	29	23	15	0	0	0	0	0	10	11	41	171.3333
20	40	34	27	10	10	0	0	0	0	2	11	33	166.6667
21	38	30	2	2	0	0	0	0	0	1	26	31	129.3333
22	38	36	15	0	0	0	0	0	4	9	34	25	161
23	38	40	17	4	0	1	0	0	0	16	37	45	198
24	41	34	7	7	0	0	0	0	0	19	35	40	183.3333
25	45	32	0	17	5	0	0	0	0	10	31	38	178
26	30	35	0	11	0	0	0	0	6	7	31	30	150
27	42	34	6	18	0	0	0	0	5	21	36	32	193.6667
28	52	30	18	7	0	0	0	0	8	22	30	32	198.6667
29	47		15	0	0	1	0	0	1	18	35	34	151
30	56		8	2	0	0	0	0	0	12	39	34	150.6667
31	48		11		0		0	0	0	15	0	32	105.6667
Total	1,121	1,319	693	542	115	18	0	2	74	250	763	1,098	5,996
Normal	1,273	1,033	833	470	201	35	0	7	103	398	715	1,106	6174
									.
Deviation From Normal	(152)	286	(140)	72	(86)	(17)	0	(5)	(29)	(148)	48	(8)	(178)