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 176°C heat to the field 8x2
What is the temperature (rounded to whole numbers) in the field 0x9 after 109 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	7	7	11	22	34	21
5	8	10	12	12	15	29	62	104	55
6	10	13	15	16	23	47	112	281	99
7	12	15	17	18	25	42	77	117	62
7	12	16	18	19	24	33	48	57	34
7	12	16	18	20	22	27	32	32	20
7	12	16	18	19	20	22	23	21	12
6	11	14	16	17	18	19	18	14	8
5	8	11	12	13	13	13	12	9	5
2	4	6	6	7	7	7	6	5	2

Temperature in field 0x9 after 109 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	7	7	11	22	34	21
5	8	10	12	12	15	29	62	104	55
6	10	13	15	16	23	47	112	281	99
7	12	15	17	18	25	42	77	117	62
7	12	16	18	19	24	33	48	57	34
7	12	16	18	20	22	27	32	32	20
7	12	16	18	19	20	22	23	21	12
6	11	14	16	17	18	19	18	14	8
5	8	11	12	13	13	13	12	9	5
2	4	6	6	7	7	7	6	5	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

3	5	6	7	7	7	11	22	34	21
5	8	10	12	12	15	29	62	104	55
6	10	13	15	16	23	47	112	281	99
7	12	15	17	18	25	42	77	117	62
7	12	16	18	19	24	33	48	57	34
7	12	16	18	20	22	27	32	32	20
7	12	16	18	19	20	22	23	21	12
6	11	14	16	17	18	19	18	14	8
5	8	11	12	13	13	13	12	9	5
2	4	6	6	7	7	7	6	5	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

3	5	6	7	7	7	11	22	34	21
5	8	10	12	12	15	29	62	104	55
6	10	13	15	16	23	47	112	281	99
7	12	15	17	18	25	42	77	117	62
7	12	16	18	19	24	33	48	57	34
7	12	16	18	20	22	27	32	32	20
7	12	16	18	19	20	22	23	21	12
6	11	14	16	17	18	19	18	14	8
5	8	11	12	13	13	13	12	9	5
2	4	6	6	7	7	7	6	5	2