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	2004	2004	2004	2004	2004	2004	2004	2004	2004	2004	2004	2004	Total
1	20	45	15	24	20	0	0	0	0	3	14	33
2	12	34	21	22	24	7	0	0	1	19	20	31
3	28	50	22	22	20	5	0	0	0	8	20	32
4	37	45	14	32	10	2	0	0	0	20	22	29
5	50	37	19	24	6	0	0	3	0	19	21	25
6	56	38	25	12	0	0	0	2	0	9	13	16
7	44	46	30	12	12	0	0	0	2	1	21	21
8	42	40	33	21	0	0	1	0	2	3	26	26
9	51	38	35	20	0	0	0	0	4	13	23	20
10	43	47	25	21	0	0	0	3	0	15	13	26
11	29	39	40	25	0	1	0	8	0	17	29	31
12	33	42	43	26	0	0	0	8	0	12	30	31
13	38	42	28	26	0	0	0	7	0	12	31	39
14	40	43	27	14	11	0	0	4	0	13	27	45
15	45	53	31	2	15	0	0	5	0	19	19	36
16	43	47	36	0	3	0	0	0	3	24	15	32
17	36	43	34	0	0	0	0	0	6	23	9	35
18	49	30	29	0	7	0	0	0	4	21	10	37
19	49	25	22	9	5	8	0	1	4	16	11	56
20	50	29	24	5	0	2	0	7	1	15	18	43
21	40	32	40	11	0	0	0	6	1	16	26	41
22	58	28	34	16	0	2	0	0	0	10	19	47
23	49	28	17	14	0	0	1	0	0	7	21	56
24	53	36	10	8	8	7	0	0	0	15	33	64
25	49	33	7	12	4	6	1	0	5	8	35	49
26	43	34	8	16	8	2	1	0	7	5	23	54
27	50	31	9	22	1	4	2	0	5	10	25	46
28	55	24	6	0	11	0	0	0	10	5	31	32
29	60	15	15	0	3	0	0	4	14	0	29	29
30	65		19	8	0	0	0	1	9	11	29	17
31	59		24		4		0	0	0	16		22
Total	1,376	1,074	742	424	172	46	6	59	78	385	663	1,101
Normal	1,258	1069	829	483	195	38	1	6	110	390	710	1097
Deviation From Normal	118	5	(87)	(59)	(23)	8	5	53	(32)	(5)	(47)	4