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 122°C heat to the field 9x7
What is the temperature (rounded to whole numbers) in the field 5x8 after 143 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	9
11	19	25	28	29	30	29	26	20	11
12	20	26	29	31	32	31	28	23	15
12	21	27	30	32	33	32	32	32	27
12	20	26	29	31	32	34	39	52	63
11	18	23	26	28	29	33	45	79	172
8	14	18	20	21	22	26	34	48	60
4	7	9	10	11	12	14	17	21	20

Temperature in field 5x8 after 143 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	9
11	19	25	28	29	30	29	26	20	11
12	20	26	29	31	32	31	28	23	15
12	21	27	30	32	33	32	32	32	27
12	20	26	29	31	32	34	39	52	63
11	18	23	26	28	29	33	45	79	172
8	14	18	20	21	22	26	34	48	60
4	7	9	10	11	12	14	17	21	20

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	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	9
11	19	25	28	29	30	29	26	20	11
12	20	26	29	31	32	31	28	23	15
12	21	27	30	32	33	32	32	32	27
12	20	26	29	31	32	34	39	52	63
11	18	23	26	28	29	33	45	79	172
8	14	18	20	21	22	26	34	48	60
4	7	9	10	11	12	14	17	21	20

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	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	9
11	19	25	28	29	30	29	26	20	11
12	20	26	29	31	32	31	28	23	15
12	21	27	30	32	33	32	32	32	27
12	20	26	29	31	32	34	39	52	63
11	18	23	26	28	29	33	45	79	172
8	14	18	20	21	22	26	34	48	60
4	7	9	10	11	12	14	17	21	20