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 162°C heat to the field 9x9
What is the temperature (rounded to whole numbers) in the field 3x4 after 119 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	14	15	15	15	14	10	5
6	10	13	15	16	16	16	15	11	6
6	11	14	15	16	17	17	15	11	7
6	10	13	15	16	17	16	15	13	10
5	9	12	14	15	15	15	17	23	24
4	7	9	10	11	11	13	23	43	65
2	4	5	5	6	7	10	24	65	195

Temperature in field 3x4 after 119 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	14	15	15	15	14	10	5
6	10	13	15	16	16	16	15	11	6
6	11	14	15	16	17	17	15	11	7
6	10	13	15	16	17	16	15	13	10
5	9	12	14	15	15	15	17	23	24
4	7	9	10	11	11	13	23	43	65
2	4	5	5	6	7	10	24	65	195

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	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	14	15	15	15	14	10	5
6	10	13	15	16	16	16	15	11	6
6	11	14	15	16	17	17	15	11	7
6	10	13	15	16	17	16	15	13	10
5	9	12	14	15	15	15	17	23	24
4	7	9	10	11	11	13	23	43	65
2	4	5	5	6	7	10	24	65	195

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	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	14	15	15	15	14	10	5
6	10	13	15	16	16	16	15	11	6
6	11	14	15	16	17	17	15	11	7
6	10	13	15	16	17	16	15	13	10
5	9	12	14	15	15	15	17	23	24
4	7	9	10	11	11	13	23	43	65
2	4	5	5	6	7	10	24	65	195