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 157°C heat to the field 2x1
What is the temperature (rounded to whole numbers) in the field 7x7 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)

15	44	83	51	28	16	10	7	5	2
30	93	250	104	50	28	18	12	8	4
25	63	108	74	46	30	21	15	11	5
17	37	54	48	36	27	21	17	12	6
12	23	32	32	28	24	20	17	12	6
9	16	22	23	23	21	19	16	12	6
7	13	17	19	19	19	18	16	11	6
6	10	14	15	16	16	15	13	10	5
4	7	10	11	12	12	11	10	7	4
2	4	5	6	6	6	6	5	4	2

Temperature in field 7x7 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

15	44	83	51	28	16	10	7	5	2
30	93	250	104	50	28	18	12	8	4
25	63	108	74	46	30	21	15	11	5
17	37	54	48	36	27	21	17	12	6
12	23	32	32	28	24	20	17	12	6
9	16	22	23	23	21	19	16	12	6
7	13	17	19	19	19	18	16	11	6
6	10	14	15	16	16	15	13	10	5
4	7	10	11	12	12	11	10	7	4
2	4	5	6	6	6	6	5	4	2

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18

15	44	83	51	28	16	10	7	5	2
30	93	250	104	50	28	18	12	8	4
25	63	108	74	46	30	21	15	11	5
17	37	54	48	36	27	21	17	12	6
12	23	32	32	28	24	20	17	12	6
9	16	22	23	23	21	19	16	12	6
7	13	17	19	19	19	18	16	11	6
6	10	14	15	16	16	15	13	10	5
4	7	10	11	12	12	11	10	7	4
2	4	5	6	6	6	6	5	4	2

18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18
18	18	18	18	18	18	18	18	18	18

15	44	83	51	28	16	10	7	5	2
30	93	250	104	50	28	18	12	8	4
25	63	108	74	46	30	21	15	11	5
17	37	54	48	36	27	21	17	12	6
12	23	32	32	28	24	20	17	12	6
9	16	22	23	23	21	19	16	12	6
7	13	17	19	19	19	18	16	11	6
6	10	14	15	16	16	15	13	10	5
4	7	10	11	12	12	11	10	7	4
2	4	5	6	6	6	6	5	4	2