Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 31°C. We apply continuously 145°C heat to the field 3x6
What is the temperature (rounded to whole numbers) in the field 2x3 after 89 iterations according to the Gauss-Seidel iteration

Field in the beginning

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

Field after 4 iterations (rounded after 4th iteration)

4	7	9	10	10	11	10	9	7	4
7	12	15	17	18	18	18	16	12	6
9	15	19	22	24	24	23	21	16	8
10	17	24	30	31	30	28	24	18	9
10	21	37	52	48	40	34	28	20	10
13	32	66	108	79	55	41	31	22	11
16	44	105	253	118	68	45	33	22	11
15	37	72	114	83	57	41	30	20	10
10	24	42	56	50	39	30	22	15	7
5	12	19	24	23	20	15	11	8	4

Temperature in field 2x3 after 89 iterations:

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

4	7	9	10	10	11	10	9	7	4
7	12	15	17	18	18	18	16	12	6
9	15	19	22	24	24	23	21	16	8
10	17	24	30	31	30	28	24	18	9
10	21	37	52	48	40	34	28	20	10
13	32	66	108	79	55	41	31	22	11
16	44	105	253	118	68	45	33	22	11
15	37	72	114	83	57	41	30	20	10
10	24	42	56	50	39	30	22	15	7
5	12	19	24	23	20	15	11	8	4

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

4	7	9	10	10	11	10	9	7	4
7	12	15	17	18	18	18	16	12	6
9	15	19	22	24	24	23	21	16	8
10	17	24	30	31	30	28	24	18	9
10	21	37	52	48	40	34	28	20	10
13	32	66	108	79	55	41	31	22	11
16	44	105	253	118	68	45	33	22	11
15	37	72	114	83	57	41	30	20	10
10	24	42	56	50	39	30	22	15	7
5	12	19	24	23	20	15	11	8	4

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

4	7	9	10	10	11	10	9	7	4
7	12	15	17	18	18	18	16	12	6
9	15	19	22	24	24	23	21	16	8
10	17	24	30	31	30	28	24	18	9
10	21	37	52	48	40	34	28	20	10
13	32	66	108	79	55	41	31	22	11
16	44	105	253	118	68	45	33	22	11
15	37	72	114	83	57	41	30	20	10
10	24	42	56	50	39	30	22	15	7
5	12	19	24	23	20	15	11	8	4