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 180°C heat to the field 3x0
What is the temperature (rounded to whole numbers) in the field 9x9 after 58 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)

8	28	82	247	87	36	18	10	6	3
11	29	63	107	69	41	25	17	11	5
10	23	41	56	48	36	26	19	13	7
9	18	28	35	34	30	25	20	14	7
8	15	22	26	27	25	23	19	14	7
8	14	19	22	23	23	22	19	14	7
7	13	17	19	21	21	20	18	13	7
6	11	15	17	18	18	18	15	11	6
5	8	11	12	13	13	13	11	8	4
2	4	6	6	7	7	7	6	4	2

Temperature in field 9x9 after 58 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

8	28	82	247	87	36	18	10	6	3
11	29	63	107	69	41	25	17	11	5
10	23	41	56	48	36	26	19	13	7
9	18	28	35	34	30	25	20	14	7
8	15	22	26	27	25	23	19	14	7
8	14	19	22	23	23	22	19	14	7
7	13	17	19	21	21	20	18	13	7
6	11	15	17	18	18	18	15	11	6
5	8	11	12	13	13	13	11	8	4
2	4	6	6	7	7	7	6	4	2

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

8	28	82	247	87	36	18	10	6	3
11	29	63	107	69	41	25	17	11	5
10	23	41	56	48	36	26	19	13	7
9	18	28	35	34	30	25	20	14	7
8	15	22	26	27	25	23	19	14	7
8	14	19	22	23	23	22	19	14	7
7	13	17	19	21	21	20	18	13	7
6	11	15	17	18	18	18	15	11	6
5	8	11	12	13	13	13	11	8	4
2	4	6	6	7	7	7	6	4	2

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

8	28	82	247	87	36	18	10	6	3
11	29	63	107	69	41	25	17	11	5
10	23	41	56	48	36	26	19	13	7
9	18	28	35	34	30	25	20	14	7
8	15	22	26	27	25	23	19	14	7
8	14	19	22	23	23	22	19	14	7
7	13	17	19	21	21	20	18	13	7
6	11	15	17	18	18	18	15	11	6
5	8	11	12	13	13	13	11	8	4
2	4	6	6	7	7	7	6	4	2