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 82°C heat to the field 3x4
What is the temperature (rounded to whole numbers) in the field 4x0 after 82 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	6	4	2
4	7	10	13	14	13	12	10	7	4
5	11	19	27	25	20	17	14	10	5
7	18	37	60	44	30	22	17	12	6
9	25	60	143	67	39	26	19	13	6
9	22	43	67	49	35	26	19	13	7
8	17	28	37	34	28	23	18	13	6
6	13	19	23	23	21	19	15	11	5
5	9	12	15	15	15	13	11	8	4
2	4	6	7	8	7	7	5	4	2

Temperature in field 4x0 after 82 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	6	4	2
4	7	10	13	14	13	12	10	7	4
5	11	19	27	25	20	17	14	10	5
7	18	37	60	44	30	22	17	12	6
9	25	60	143	67	39	26	19	13	6
9	22	43	67	49	35	26	19	13	7
8	17	28	37	34	28	23	18	13	6
6	13	19	23	23	21	19	15	11	5
5	9	12	15	15	15	13	11	8	4
2	4	6	7	8	7	7	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	5	6	6	6	6	6	4	2
4	7	10	13	14	13	12	10	7	4
5	11	19	27	25	20	17	14	10	5
7	18	37	60	44	30	22	17	12	6
9	25	60	143	67	39	26	19	13	6
9	22	43	67	49	35	26	19	13	7
8	17	28	37	34	28	23	18	13	6
6	13	19	23	23	21	19	15	11	5
5	9	12	15	15	15	13	11	8	4
2	4	6	7	8	7	7	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	5	6	6	6	6	6	4	2
4	7	10	13	14	13	12	10	7	4
5	11	19	27	25	20	17	14	10	5
7	18	37	60	44	30	22	17	12	6
9	25	60	143	67	39	26	19	13	6
9	22	43	67	49	35	26	19	13	7
8	17	28	37	34	28	23	18	13	6
6	13	19	23	23	21	19	15	11	5
5	9	12	15	15	15	13	11	8	4
2	4	6	7	8	7	7	5	4	2