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 85°C heat to the field 3x6
What is the temperature (rounded to whole numbers) in the field 8x8 after 121 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)

2	4	5	5	6	6	6	5	4	2
4	7	8	9	10	10	10	9	7	3
5	8	11	12	13	13	13	11	9	4
5	9	13	17	17	17	15	13	10	5
6	12	21	30	27	23	19	15	11	6
7	18	38	62	45	31	23	17	12	6
9	25	61	147	68	39	26	18	12	6
8	21	41	66	48	33	23	17	11	5
6	14	24	32	28	22	17	12	8	4
3	7	11	14	13	11	9	6	4	2

Temperature in field 8x8 after 121 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

2	4	5	5	6	6	6	5	4	2
4	7	8	9	10	10	10	9	7	3
5	8	11	12	13	13	13	11	9	4
5	9	13	17	17	17	15	13	10	5
6	12	21	30	27	23	19	15	11	6
7	18	38	62	45	31	23	17	12	6
9	25	61	147	68	39	26	18	12	6
8	21	41	66	48	33	23	17	11	5
6	14	24	32	28	22	17	12	8	4
3	7	11	14	13	11	9	6	4	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

2	4	5	5	6	6	6	5	4	2
4	7	8	9	10	10	10	9	7	3
5	8	11	12	13	13	13	11	9	4
5	9	13	17	17	17	15	13	10	5
6	12	21	30	27	23	19	15	11	6
7	18	38	62	45	31	23	17	12	6
9	25	61	147	68	39	26	18	12	6
8	21	41	66	48	33	23	17	11	5
6	14	24	32	28	22	17	12	8	4
3	7	11	14	13	11	9	6	4	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

2	4	5	5	6	6	6	5	4	2
4	7	8	9	10	10	10	9	7	3
5	8	11	12	13	13	13	11	9	4
5	9	13	17	17	17	15	13	10	5
6	12	21	30	27	23	19	15	11	6
7	18	38	62	45	31	23	17	12	6
9	25	61	147	68	39	26	18	12	6
8	21	41	66	48	33	23	17	11	5
6	14	24	32	28	22	17	12	8	4
3	7	11	14	13	11	9	6	4	2