Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 19°C. We apply continuously 83°C heat to the field 4x9
What is the temperature (rounded to whole numbers) in the field 9x6 after 83 iterations according to the Gauss-Seidel iteration

Field in the beginning

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

Field after 4 iterations (rounded after 4th iteration)

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	17	17	15	12	6
6	11	14	16	18	18	18	16	12	6
6	11	14	17	20	20	19	16	12	6
6	10	15	22	29	26	21	17	11	6
4	9	17	32	53	36	23	15	9	4
3	6	16	41	117	43	19	10	6	2

Temperature in field 9x6 after 83 iterations:

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	17	17	15	12	6
6	11	14	16	18	18	18	16	12	6
6	11	14	17	20	20	19	16	12	6
6	10	15	22	29	26	21	17	11	6
4	9	17	32	53	36	23	15	9	4
3	6	16	41	117	43	19	10	6	2

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	17	17	15	12	6
6	11	14	16	18	18	18	16	12	6
6	11	14	17	20	20	19	16	12	6
6	10	15	22	29	26	21	17	11	6
4	9	17	32	53	36	23	15	9	4
3	6	16	41	117	43	19	10	6	2

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	17	17	15	12	6
6	11	14	16	18	18	18	16	12	6
6	11	14	17	20	20	19	16	12	6
6	10	15	22	29	26	21	17	11	6
4	9	17	32	53	36	23	15	9	4
3	6	16	41	117	43	19	10	6	2