Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 19°C. We apply continuously 198°C heat to the field 7x4
What is the temperature (rounded to whole numbers) in the field 7x5 after 66 iterations according to the Gauss-Seidel iteration

Field in the beginning

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

Field after 4 iterations (rounded after 4th iteration)

3	4	5	6	6	6	6	6	5	3
4	8	9	11	11	11	14	18	15	8
5	9	12	13	14	19	33	48	37	19
6	11	13	15	19	35	74	126	80	36
6	11	14	17	25	53	129	325	133	52
6	11	14	17	25	46	87	139	90	42
6	11	14	17	22	34	53	69	53	28
6	10	13	15	18	24	32	37	30	17
4	7	10	11	13	16	19	20	17	9
2	4	5	6	7	8	9	9	7	4

Temperature in field 7x5 after 66 iterations:

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	5	3
4	8	9	11	11	11	14	18	15	8
5	9	12	13	14	19	33	48	37	19
6	11	13	15	19	35	74	126	80	36
6	11	14	17	25	53	129	325	133	52
6	11	14	17	25	46	87	139	90	42
6	11	14	17	22	34	53	69	53	28
6	10	13	15	18	24	32	37	30	17
4	7	10	11	13	16	19	20	17	9
2	4	5	6	7	8	9	9	7	4

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	5	3
4	8	9	11	11	11	14	18	15	8
5	9	12	13	14	19	33	48	37	19
6	11	13	15	19	35	74	126	80	36
6	11	14	17	25	53	129	325	133	52
6	11	14	17	25	46	87	139	90	42
6	11	14	17	22	34	53	69	53	28
6	10	13	15	18	24	32	37	30	17
4	7	10	11	13	16	19	20	17	9
2	4	5	6	7	8	9	9	7	4

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	5	3
4	8	9	11	11	11	14	18	15	8
5	9	12	13	14	19	33	48	37	19
6	11	13	15	19	35	74	126	80	36
6	11	14	17	25	53	129	325	133	52
6	11	14	17	25	46	87	139	90	42
6	11	14	17	22	34	53	69	53	28
6	10	13	15	18	24	32	37	30	17
4	7	10	11	13	16	19	20	17	9
2	4	5	6	7	8	9	9	7	4