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 192°C heat to the field 7x1
What is the temperature (rounded to whole numbers) in the field 3x4 after 80 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	10	24	56	101	60	26
5	8	10	12	20	46	118	306	121	46
6	10	13	16	23	43	82	132	84	39
7	12	15	17	22	34	52	67	51	27
7	12	16	18	21	27	35	39	32	18
7	12	16	18	20	23	27	27	22	12
7	12	16	18	19	21	22	21	17	9
6	11	14	16	17	18	18	17	13	7
5	8	11	12	13	13	13	12	9	5
2	4	6	6	7	7	7	6	4	2

Temperature in field 3x4 after 80 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	10	24	56	101	60	26
5	8	10	12	20	46	118	306	121	46
6	10	13	16	23	43	82	132	84	39
7	12	15	17	22	34	52	67	51	27
7	12	16	18	21	27	35	39	32	18
7	12	16	18	20	23	27	27	22	12
7	12	16	18	19	21	22	21	17	9
6	11	14	16	17	18	18	17	13	7
5	8	11	12	13	13	13	12	9	5
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

3	5	6	7	10	24	56	101	60	26
5	8	10	12	20	46	118	306	121	46
6	10	13	16	23	43	82	132	84	39
7	12	15	17	22	34	52	67	51	27
7	12	16	18	21	27	35	39	32	18
7	12	16	18	20	23	27	27	22	12
7	12	16	18	19	21	22	21	17	9
6	11	14	16	17	18	18	17	13	7
5	8	11	12	13	13	13	12	9	5
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

3	5	6	7	10	24	56	101	60	26
5	8	10	12	20	46	118	306	121	46
6	10	13	16	23	43	82	132	84	39
7	12	15	17	22	34	52	67	51	27
7	12	16	18	21	27	35	39	32	18
7	12	16	18	20	23	27	27	22	12
7	12	16	18	19	21	22	21	17	9
6	11	14	16	17	18	18	17	13	7
5	8	11	12	13	13	13	12	9	5
2	4	6	6	7	7	7	6	4	2