Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 23°C. We apply continuously 163°C heat to the field 3x2
What is the temperature (rounded to whole numbers) in the field 9x9 after 70 iterations according to the Gauss-Seidel iteration

Field in the beginning

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

Field after 4 iterations (rounded after 4th iteration)

3	9	21	35	28	20	13	10	6	3
8	25	59	104	70	42	27	18	12	6
13	41	106	271	118	61	36	24	15	7
13	36	73	120	85	55	37	26	17	8
11	27	47	63	56	44	33	25	17	9
10	20	31	39	39	34	29	24	17	9
9	17	23	28	29	28	25	21	16	8
7	13	18	21	22	22	21	18	13	7
5	10	13	15	16	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2

Temperature in field 9x9 after 70 iterations:

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

3	9	21	35	28	20	13	10	6	3
8	25	59	104	70	42	27	18	12	6
13	41	106	271	118	61	36	24	15	7
13	36	73	120	85	55	37	26	17	8
11	27	47	63	56	44	33	25	17	9
10	20	31	39	39	34	29	24	17	9
9	17	23	28	29	28	25	21	16	8
7	13	18	21	22	22	21	18	13	7
5	10	13	15	16	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

3	9	21	35	28	20	13	10	6	3
8	25	59	104	70	42	27	18	12	6
13	41	106	271	118	61	36	24	15	7
13	36	73	120	85	55	37	26	17	8
11	27	47	63	56	44	33	25	17	9
10	20	31	39	39	34	29	24	17	9
9	17	23	28	29	28	25	21	16	8
7	13	18	21	22	22	21	18	13	7
5	10	13	15	16	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

3	9	21	35	28	20	13	10	6	3
8	25	59	104	70	42	27	18	12	6
13	41	106	271	118	61	36	24	15	7
13	36	73	120	85	55	37	26	17	8
11	27	47	63	56	44	33	25	17	9
10	20	31	39	39	34	29	24	17	9
9	17	23	28	29	28	25	21	16	8
7	13	18	21	22	22	21	18	13	7
5	10	13	15	16	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2