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 84°C heat to the field 3x5
What is the temperature (rounded to whole numbers) in the field 8x5 after 120 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	5	7	7	8	8	8	7	5	3
5	9	11	13	14	14	14	12	9	5
7	11	16	20	20	20	18	16	12	6
7	15	24	33	31	27	23	19	14	7
9	21	42	67	50	36	28	22	15	8
11	29	65	151	73	44	31	24	16	8
11	25	47	72	54	39	30	23	16	8
9	19	31	40	37	31	25	20	14	7
6	13	19	23	23	21	18	14	10	5
3	6	9	11	11	10	9	7	5	2

Temperature in field 8x5 after 120 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	5	7	7	8	8	8	7	5	3
5	9	11	13	14	14	14	12	9	5
7	11	16	20	20	20	18	16	12	6
7	15	24	33	31	27	23	19	14	7
9	21	42	67	50	36	28	22	15	8
11	29	65	151	73	44	31	24	16	8
11	25	47	72	54	39	30	23	16	8
9	19	31	40	37	31	25	20	14	7
6	13	19	23	23	21	18	14	10	5
3	6	9	11	11	10	9	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	5	7	7	8	8	8	7	5	3
5	9	11	13	14	14	14	12	9	5
7	11	16	20	20	20	18	16	12	6
7	15	24	33	31	27	23	19	14	7
9	21	42	67	50	36	28	22	15	8
11	29	65	151	73	44	31	24	16	8
11	25	47	72	54	39	30	23	16	8
9	19	31	40	37	31	25	20	14	7
6	13	19	23	23	21	18	14	10	5
3	6	9	11	11	10	9	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	5	7	7	8	8	8	7	5	3
5	9	11	13	14	14	14	12	9	5
7	11	16	20	20	20	18	16	12	6
7	15	24	33	31	27	23	19	14	7
9	21	42	67	50	36	28	22	15	8
11	29	65	151	73	44	31	24	16	8
11	25	47	72	54	39	30	23	16	8
9	19	31	40	37	31	25	20	14	7
6	13	19	23	23	21	18	14	10	5
3	6	9	11	11	10	9	7	5	2