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 82°C heat to the field 2x5
What is the temperature (rounded to whole numbers) in the field 5x7 after 120 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	18	20	21	21	20	18	14	7
10	19	25	28	28	28	27	24	18	9
13	27	39	39	36	33	31	27	20	11
19	44	72	58	46	39	35	30	22	11
26	67	155	81	54	43	37	31	23	12
22	49	77	62	49	41	36	30	22	11
16	33	45	44	40	35	32	27	19	10
11	20	27	29	28	26	23	20	14	7
5	10	13	14	14	13	12	10	7	3

Temperature in field 5x7 after 120 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	18	20	21	21	20	18	14	7
10	19	25	28	28	28	27	24	18	9
13	27	39	39	36	33	31	27	20	11
19	44	72	58	46	39	35	30	22	11
26	67	155	81	54	43	37	31	23	12
22	49	77	62	49	41	36	30	22	11
16	33	45	44	40	35	32	27	19	10
11	20	27	29	28	26	23	20	14	7
5	10	13	14	14	13	12	10	7	3

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	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	18	20	21	21	20	18	14	7
10	19	25	28	28	28	27	24	18	9
13	27	39	39	36	33	31	27	20	11
19	44	72	58	46	39	35	30	22	11
26	67	155	81	54	43	37	31	23	12
22	49	77	62	49	41	36	30	22	11
16	33	45	44	40	35	32	27	19	10
11	20	27	29	28	26	23	20	14	7
5	10	13	14	14	13	12	10	7	3

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	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	18	20	21	21	20	18	14	7
10	19	25	28	28	28	27	24	18	9
13	27	39	39	36	33	31	27	20	11
19	44	72	58	46	39	35	30	22	11
26	67	155	81	54	43	37	31	23	12
22	49	77	62	49	41	36	30	22	11
16	33	45	44	40	35	32	27	19	10
11	20	27	29	28	26	23	20	14	7
5	10	13	14	14	13	12	10	7	3