Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 35°C. We apply continuously 109°C heat to the field 9x6
What is the temperature (rounded to whole numbers) in the field 2x4 after 150 iterations according to the Gauss-Seidel iteration

Field in the beginning

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35

Field after 4 iterations (rounded after 4th iteration)

5	8	10	11	12	12	12	11	8	4
8	14	17	19	20	21	20	18	14	7
10	17	22	25	26	27	26	23	18	10
11	19	25	28	29	30	29	26	22	14
12	20	26	29	31	32	31	31	31	25
12	21	27	30	32	33	34	39	50	58
12	20	26	29	31	33	36	47	75	157
11	18	23	26	28	30	32	39	50	58
8	14	18	20	21	22	24	26	28	24
4	7	9	10	11	12	12	13	13	9

Temperature in field 2x4 after 150 iterations:

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35

5	8	10	11	12	12	12	11	8	4
8	14	17	19	20	21	20	18	14	7
10	17	22	25	26	27	26	23	18	10
11	19	25	28	29	30	29	26	22	14
12	20	26	29	31	32	31	31	31	25
12	21	27	30	32	33	34	39	50	58
12	20	26	29	31	33	36	47	75	157
11	18	23	26	28	30	32	39	50	58
8	14	18	20	21	22	24	26	28	24
4	7	9	10	11	12	12	13	13	9

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35

5	8	10	11	12	12	12	11	8	4
8	14	17	19	20	21	20	18	14	7
10	17	22	25	26	27	26	23	18	10
11	19	25	28	29	30	29	26	22	14
12	20	26	29	31	32	31	31	31	25
12	21	27	30	32	33	34	39	50	58
12	20	26	29	31	33	36	47	75	157
11	18	23	26	28	30	32	39	50	58
8	14	18	20	21	22	24	26	28	24
4	7	9	10	11	12	12	13	13	9

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35

5	8	10	11	12	12	12	11	8	4
8	14	17	19	20	21	20	18	14	7
10	17	22	25	26	27	26	23	18	10
11	19	25	28	29	30	29	26	22	14
12	20	26	29	31	32	31	31	31	25
12	21	27	30	32	33	34	39	50	58
12	20	26	29	31	33	36	47	75	157
11	18	23	26	28	30	32	39	50	58
8	14	18	20	21	22	24	26	28	24
4	7	9	10	11	12	12	13	13	9