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 189°C heat to the field 3x7
What is the temperature (rounded to whole numbers) in the field 2x0 after 31 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	5	6	6	6	6	5	4	2
4	7	9	10	10	11	10	9	7	4
5	9	11	13	13	14	13	12	9	5
6	10	13	15	16	16	16	14	10	5
6	10	16	23	23	21	19	16	12	6
6	15	32	49	43	32	25	19	13	7
9	29	69	122	83	51	32	22	14	7
13	43	118	309	132	66	37	23	14	6
11	33	75	126	85	51	30	19	11	5
6	17	34	49	40	26	17	10	6	3

Temperature in field 2x0 after 31 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	5	6	6	6	6	5	4	2
4	7	9	10	10	11	10	9	7	4
5	9	11	13	13	14	13	12	9	5
6	10	13	15	16	16	16	14	10	5
6	10	16	23	23	21	19	16	12	6
6	15	32	49	43	32	25	19	13	7
9	29	69	122	83	51	32	22	14	7
13	43	118	309	132	66	37	23	14	6
11	33	75	126	85	51	30	19	11	5
6	17	34	49	40	26	17	10	6	3

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	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	5	6	6	6	6	5	4	2
4	7	9	10	10	11	10	9	7	4
5	9	11	13	13	14	13	12	9	5
6	10	13	15	16	16	16	14	10	5
6	10	16	23	23	21	19	16	12	6
6	15	32	49	43	32	25	19	13	7
9	29	69	122	83	51	32	22	14	7
13	43	118	309	132	66	37	23	14	6
11	33	75	126	85	51	30	19	11	5
6	17	34	49	40	26	17	10	6	3

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	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	5	6	6	6	6	5	4	2
4	7	9	10	10	11	10	9	7	4
5	9	11	13	13	14	13	12	9	5
6	10	13	15	16	16	16	14	10	5
6	10	16	23	23	21	19	16	12	6
6	15	32	49	43	32	25	19	13	7
9	29	69	122	83	51	32	22	14	7
13	43	118	309	132	66	37	23	14	6
11	33	75	126	85	51	30	19	11	5
6	17	34	49	40	26	17	10	6	3