Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 18°C. We apply continuously 62°C heat to the field 4x2
What is the temperature (rounded to whole numbers) in the field 8x4 after 83 iterations according to the Gauss-Seidel iteration

Field in the beginning

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18

Field after 4 iterations (rounded after 4th iteration)

3	4	7	11	16	14	10	8	5	3
4	8	15	28	45	32	21	15	9	5
5	11	22	48	110	52	30	19	12	6
6	12	21	36	54	40	29	20	13	7
6	12	18	26	33	30	25	19	13	7
6	12	16	21	24	24	21	18	13	7
6	11	15	18	19	20	19	16	12	6
5	10	13	15	16	16	16	14	10	5
4	7	9	11	12	12	12	10	7	4
2	4	5	6	6	6	6	5	4	2

Temperature in field 8x4 after 83 iterations:

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18

3	4	7	11	16	14	10	8	5	3
4	8	15	28	45	32	21	15	9	5
5	11	22	48	110	52	30	19	12	6
6	12	21	36	54	40	29	20	13	7
6	12	18	26	33	30	25	19	13	7
6	12	16	21	24	24	21	18	13	7
6	11	15	18	19	20	19	16	12	6
5	10	13	15	16	16	16	14	10	5
4	7	9	11	12	12	12	10	7	4
2	4	5	6	6	6	6	5	4	2

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18

3	4	7	11	16	14	10	8	5	3
4	8	15	28	45	32	21	15	9	5
5	11	22	48	110	52	30	19	12	6
6	12	21	36	54	40	29	20	13	7
6	12	18	26	33	30	25	19	13	7
6	12	16	21	24	24	21	18	13	7
6	11	15	18	19	20	19	16	12	6
5	10	13	15	16	16	16	14	10	5
4	7	9	11	12	12	12	10	7	4
2	4	5	6	6	6	6	5	4	2

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18

3	4	7	11	16	14	10	8	5	3
4	8	15	28	45	32	21	15	9	5
5	11	22	48	110	52	30	19	12	6
6	12	21	36	54	40	29	20	13	7
6	12	18	26	33	30	25	19	13	7
6	12	16	21	24	24	21	18	13	7
6	11	15	18	19	20	19	16	12	6
5	10	13	15	16	16	16	14	10	5
4	7	9	11	12	12	12	10	7	4
2	4	5	6	6	6	6	5	4	2