Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 17°C. We apply continuously 150°C heat to the field 4x0
What is the temperature (rounded to whole numbers) in the field 4x2 after 73 iterations according to the Gauss-Seidel iteration

Field in the beginning

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

Field after 4 iterations (rounded after 4th iteration)

3	9	24	69	206	72	29	14	7	3
5	12	26	53	89	58	33	20	11	5
5	12	22	35	47	40	29	20	13	6
6	11	18	25	30	28	24	19	13	7
6	11	15	19	22	22	20	17	12	6
6	10	14	17	19	19	18	16	12	6
6	10	13	15	17	17	17	15	11	6
5	9	12	13	14	15	14	13	9	5
4	7	9	10	11	11	11	9	7	3
2	3	4	5	6	6	5	5	3	2

Temperature in field 4x2 after 73 iterations:

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

3	9	24	69	206	72	29	14	7	3
5	12	26	53	89	58	33	20	11	5
5	12	22	35	47	40	29	20	13	6
6	11	18	25	30	28	24	19	13	7
6	11	15	19	22	22	20	17	12	6
6	10	14	17	19	19	18	16	12	6
6	10	13	15	17	17	17	15	11	6
5	9	12	13	14	15	14	13	9	5
4	7	9	10	11	11	11	9	7	3
2	3	4	5	6	6	5	5	3	2

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

3	9	24	69	206	72	29	14	7	3
5	12	26	53	89	58	33	20	11	5
5	12	22	35	47	40	29	20	13	6
6	11	18	25	30	28	24	19	13	7
6	11	15	19	22	22	20	17	12	6
6	10	14	17	19	19	18	16	12	6
6	10	13	15	17	17	17	15	11	6
5	9	12	13	14	15	14	13	9	5
4	7	9	10	11	11	11	9	7	3
2	3	4	5	6	6	5	5	3	2

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

3	9	24	69	206	72	29	14	7	3
5	12	26	53	89	58	33	20	11	5
5	12	22	35	47	40	29	20	13	6
6	11	18	25	30	28	24	19	13	7
6	11	15	19	22	22	20	17	12	6
6	10	14	17	19	19	18	16	12	6
6	10	13	15	17	17	17	15	11	6
5	9	12	13	14	15	14	13	9	5
4	7	9	10	11	11	11	9	7	3
2	3	4	5	6	6	5	5	3	2