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 136°C heat to the field 5x7
What is the temperature (rounded to whole numbers) in the field 2x7 after 138 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	31	30	27	20	11
12	20	26	29	33	37	36	32	23	12
12	21	27	33	45	57	51	40	28	14
12	20	28	42	71	109	80	53	33	16
11	19	29	51	105	241	113	62	34	16
8	14	23	39	68	106	75	47	27	12
4	8	12	20	32	43	35	24	15	7

Temperature in field 2x7 after 138 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	31	30	27	20	11
12	20	26	29	33	37	36	32	23	12
12	21	27	33	45	57	51	40	28	14
12	20	28	42	71	109	80	53	33	16
11	19	29	51	105	241	113	62	34	16
8	14	23	39	68	106	75	47	27	12
4	8	12	20	32	43	35	24	15	7

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	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	31	30	27	20	11
12	20	26	29	33	37	36	32	23	12
12	21	27	33	45	57	51	40	28	14
12	20	28	42	71	109	80	53	33	16
11	19	29	51	105	241	113	62	34	16
8	14	23	39	68	106	75	47	27	12
4	8	12	20	32	43	35	24	15	7

35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	35	35	35	35
35	35	35	35	35	35	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	31	30	27	20	11
12	20	26	29	33	37	36	32	23	12
12	21	27	33	45	57	51	40	28	14
12	20	28	42	71	109	80	53	33	16
11	19	29	51	105	241	113	62	34	16
8	14	23	39	68	106	75	47	27	12
4	8	12	20	32	43	35	24	15	7