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 121°C heat to the field 7x9
What is the temperature (rounded to whole numbers) in the field 1x6 after 67 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	10
12	20	26	29	31	32	31	28	21	11
12	21	27	30	32	33	32	29	22	12
12	20	26	29	31	32	34	33	26	14
11	18	23	26	28	32	39	45	34	17
8	14	18	20	23	32	52	78	48	21
4	7	9	11	15	27	62	171	60	20

Temperature in field 1x6 after 67 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	10
12	20	26	29	31	32	31	28	21	11
12	21	27	30	32	33	32	29	22	12
12	20	26	29	31	32	34	33	26	14
11	18	23	26	28	32	39	45	34	17
8	14	18	20	23	32	52	78	48	21
4	7	9	11	15	27	62	171	60	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	10
12	20	26	29	31	32	31	28	21	11
12	21	27	30	32	33	32	29	22	12
12	20	26	29	31	32	34	33	26	14
11	18	23	26	28	32	39	45	34	17
8	14	18	20	23	32	52	78	48	21
4	7	9	11	15	27	62	171	60	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	10
12	20	26	29	31	32	31	28	21	11
12	21	27	30	32	33	32	29	22	12
12	20	26	29	31	32	34	33	26	14
11	18	23	26	28	32	39	45	34	17
8	14	18	20	23	32	52	78	48	21
4	7	9	11	15	27	62	171	60	20