Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 21°C. We apply continuously 134°C heat to the field 4x4
What is the temperature (rounded to whole numbers) in the field 5x4 after 131 iterations according to the Gauss-Seidel iteration

Field in the beginning

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

Field after 4 iterations (rounded after 4th iteration)

3	5	6	7	8	8	7	7	5	3
5	8	10	14	18	17	16	13	9	5
6	10	16	28	40	35	27	20	13	7
7	14	28	56	93	65	42	27	17	8
8	18	40	93	228	103	55	33	20	10
8	17	35	65	103	74	48	32	20	10
7	16	27	42	55	48	38	28	18	9
7	13	20	27	33	32	28	22	15	7
5	9	13	17	20	20	18	15	10	5
3	5	7	8	10	10	9	7	5	3

Temperature in field 5x4 after 131 iterations:

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	8	8	7	7	5	3
5	8	10	14	18	17	16	13	9	5
6	10	16	28	40	35	27	20	13	7
7	14	28	56	93	65	42	27	17	8
8	18	40	93	228	103	55	33	20	10
8	17	35	65	103	74	48	32	20	10
7	16	27	42	55	48	38	28	18	9
7	13	20	27	33	32	28	22	15	7
5	9	13	17	20	20	18	15	10	5
3	5	7	8	10	10	9	7	5	3

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	8	8	7	7	5	3
5	8	10	14	18	17	16	13	9	5
6	10	16	28	40	35	27	20	13	7
7	14	28	56	93	65	42	27	17	8
8	18	40	93	228	103	55	33	20	10
8	17	35	65	103	74	48	32	20	10
7	16	27	42	55	48	38	28	18	9
7	13	20	27	33	32	28	22	15	7
5	9	13	17	20	20	18	15	10	5
3	5	7	8	10	10	9	7	5	3

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	8	8	7	7	5	3
5	8	10	14	18	17	16	13	9	5
6	10	16	28	40	35	27	20	13	7
7	14	28	56	93	65	42	27	17	8
8	18	40	93	228	103	55	33	20	10
8	17	35	65	103	74	48	32	20	10
7	16	27	42	55	48	38	28	18	9
7	13	20	27	33	32	28	22	15	7
5	9	13	17	20	20	18	15	10	5
3	5	7	8	10	10	9	7	5	3