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 155°C heat to the field 5x2
What is the temperature (rounded to whole numbers) in the field 9x7 after 57 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	10	20	32	26	17	10	5
4	8	12	25	56	98	65	37	20	9
5	10	18	41	101	257	111	54	28	12
6	11	19	37	70	113	78	48	27	13
6	12	18	29	45	59	51	37	23	11
6	12	17	23	31	36	34	28	19	10
6	11	15	19	23	26	25	22	16	8
6	10	13	16	18	19	19	17	12	6
4	7	10	11	13	13	13	11	8	4
2	4	5	6	6	7	7	6	4	2

Temperature in field 9x7 after 57 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	10	20	32	26	17	10	5
4	8	12	25	56	98	65	37	20	9
5	10	18	41	101	257	111	54	28	12
6	11	19	37	70	113	78	48	27	13
6	12	18	29	45	59	51	37	23	11
6	12	17	23	31	36	34	28	19	10
6	11	15	19	23	26	25	22	16	8
6	10	13	16	18	19	19	17	12	6
4	7	10	11	13	13	13	11	8	4
2	4	5	6	6	7	7	6	4	2

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	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	10	20	32	26	17	10	5
4	8	12	25	56	98	65	37	20	9
5	10	18	41	101	257	111	54	28	12
6	11	19	37	70	113	78	48	27	13
6	12	18	29	45	59	51	37	23	11
6	12	17	23	31	36	34	28	19	10
6	11	15	19	23	26	25	22	16	8
6	10	13	16	18	19	19	17	12	6
4	7	10	11	13	13	13	11	8	4
2	4	5	6	6	7	7	6	4	2

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	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	10	20	32	26	17	10	5
4	8	12	25	56	98	65	37	20	9
5	10	18	41	101	257	111	54	28	12
6	11	19	37	70	113	78	48	27	13
6	12	18	29	45	59	51	37	23	11
6	12	17	23	31	36	34	28	19	10
6	11	15	19	23	26	25	22	16	8
6	10	13	16	18	19	19	17	12	6
4	7	10	11	13	13	13	11	8	4
2	4	5	6	6	7	7	6	4	2