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	2006	2006	2006	2006	2006	2006	2006	2006	2006	2006	2006	2006	Total
1	24	26	28	21	8	0	0	0	1	2	32	39	181
2	24	26	33	13	8	0	0	0	2	0	37	40	183
3	23	27	37	26	0	2	0	0	2	0	33	48	198
4	26	36	38	22	8	1	0	0	1	8	21	44	205
5	33	40	32	18	13	0	0	0	3	16	17	35	207
6	36	39	37	11	15	0	0	0	0	17	14	37	206
7	31	39	26	22	7	0	0	0	0	11	14	52	202
8	27	42	15	30	2	0	0	0	0	7	13	44	180
9	31	37	16	20	0	5	0	0	1	5	15	32	162
10	26	35	22	9	5	8	0	0	6	7	20	23	161
11	28	38	9	0	21	5	0	0	0	23	28	19	171
12	16	41	7	4	21	4	0	0	0	29	30	21	173
13	28	37	24	0	19	2	0	0	2	23	27	24	186
14	36	23	30	1	14	0	0	0	3	25	23	19	174
15	32	24	30	5	14	0	0	0	1	16	23	29	174
16	26	26	31	11	12	0	0	0	0	13	26	15	160
17	35	48	34	14	10	0	0	0	0	11	29	22	203
18	35	60	36	9	15	0	0	0	8	11	27	33	234
19	16	50	32	4	15	0	0	0	15	22	31	34	219
20	26	39	34	4	6	0	0	0	17	19	31	28	204
21	35	34	37	7	18	0	0	0	6	14	30	18	199
22	33	31	29	9	14	0	0	0	0	28	27	21	192
23	34	34	29	15	4	0	0	0	3	29	27	28	203
24	30	27	30	11	0	0	0	0	13	29	19	29	188
25	37	39	30	26	0	0	0	0	8	24	13	28	205
26	32	36	32	15	1	0	0	0	4	24	12	34	190
27	23	36	21	11	0	0	0	0	9	23	11	29	163
28	16	33	22	9	0	0	0	0	18	23	6	25	152
29	22		20	8	0	1	0	1	12	19	12	22	117
30	32		4	10	0	0	0	0	11	5	29	20	111
31	32		11		0	0	0	0		27		21	91
Total	885	1,003	816	365	250	28	0	1	146	510	677	913	5,594
Normal	1,258	1,037	829	483	195	38	1	6	110	390	710	1,097	6154
Deviation From Normal	(373)	(34)	(13)	(118)	55	(10)	(1)	(5)	36	120	(33)	(184)	(560)