Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 21°C. We apply continuously 145°C heat to the field 5x7
What is the temperature (rounded to whole numbers) in the field 5x1 after 57 iterations according to the Gauss-Seidel iteration

Field in the beginning

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

Field after 4 iterations (rounded after 4th iteration)

3	5	6	7	7	7	7	6	5	2
5	8	10	12	12	12	12	11	8	4
6	10	13	15	16	16	16	14	11	6
7	12	15	17	18	19	18	16	12	6
7	12	16	18	21	25	24	21	15	8
7	12	16	21	33	46	40	29	19	9
7	12	18	32	61	101	70	43	25	12
6	12	20	42	99	244	107	54	28	12
5	9	16	32	63	102	70	41	23	10
2	5	9	17	29	40	33	21	12	6

Temperature in field 5x1 after 57 iterations:

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	7	7	7	6	5	2
5	8	10	12	12	12	12	11	8	4
6	10	13	15	16	16	16	14	11	6
7	12	15	17	18	19	18	16	12	6
7	12	16	18	21	25	24	21	15	8
7	12	16	21	33	46	40	29	19	9
7	12	18	32	61	101	70	43	25	12
6	12	20	42	99	244	107	54	28	12
5	9	16	32	63	102	70	41	23	10
2	5	9	17	29	40	33	21	12	6

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	7	7	7	6	5	2
5	8	10	12	12	12	12	11	8	4
6	10	13	15	16	16	16	14	11	6
7	12	15	17	18	19	18	16	12	6
7	12	16	18	21	25	24	21	15	8
7	12	16	21	33	46	40	29	19	9
7	12	18	32	61	101	70	43	25	12
6	12	20	42	99	244	107	54	28	12
5	9	16	32	63	102	70	41	23	10
2	5	9	17	29	40	33	21	12	6

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	7	7	7	6	5	2
5	8	10	12	12	12	12	11	8	4
6	10	13	15	16	16	16	14	11	6
7	12	15	17	18	19	18	16	12	6
7	12	16	18	21	25	24	21	15	8
7	12	16	21	33	46	40	29	19	9
7	12	18	32	61	101	70	43	25	12
6	12	20	42	99	244	107	54	28	12
5	9	16	32	63	102	70	41	23	10
2	5	9	17	29	40	33	21	12	6