Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 36°C. We apply continuously 86°C heat to the field 9x4
What is the temperature (rounded to whole numbers) in the field 5x3 after 75 iterations according to the Gauss-Seidel iteration

Field in the beginning

36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36

Field after 4 iterations (rounded after 4th iteration)

5	8	10	11	12	12	12	11	8	5
8	14	18	20	21	21	21	19	15	10
10	18	23	25	27	27	27	26	26	20
11	20	25	28	30	31	32	35	42	47
12	21	27	30	32	33	36	43	65	126
12	21	27	31	33	34	36	41	47	50
12	21	27	30	32	33	35	35	34	25
11	19	24	27	29	30	30	29	24	15
8	14	18	21	22	23	22	20	16	9
4	7	9	11	12	12	12	10	8	4

Temperature in field 5x3 after 75 iterations:

36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36

5	8	10	11	12	12	12	11	8	5
8	14	18	20	21	21	21	19	15	10
10	18	23	25	27	27	27	26	26	20
11	20	25	28	30	31	32	35	42	47
12	21	27	30	32	33	36	43	65	126
12	21	27	31	33	34	36	41	47	50
12	21	27	30	32	33	35	35	34	25
11	19	24	27	29	30	30	29	24	15
8	14	18	21	22	23	22	20	16	9
4	7	9	11	12	12	12	10	8	4

36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36

5	8	10	11	12	12	12	11	8	5
8	14	18	20	21	21	21	19	15	10
10	18	23	25	27	27	27	26	26	20
11	20	25	28	30	31	32	35	42	47
12	21	27	30	32	33	36	43	65	126
12	21	27	31	33	34	36	41	47	50
12	21	27	30	32	33	35	35	34	25
11	19	24	27	29	30	30	29	24	15
8	14	18	21	22	23	22	20	16	9
4	7	9	11	12	12	12	10	8	4

36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36
36	36	36	36	36	36	36	36	36	36

5	8	10	11	12	12	12	11	8	5
8	14	18	20	21	21	21	19	15	10
10	18	23	25	27	27	27	26	26	20
11	20	25	28	30	31	32	35	42	47
12	21	27	30	32	33	36	43	65	126
12	21	27	31	33	34	36	41	47	50
12	21	27	30	32	33	35	35	34	25
11	19	24	27	29	30	30	29	24	15
8	14	18	21	22	23	22	20	16	9
4	7	9	11	12	12	12	10	8	4