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 88°C heat to the field 4x5
What is the temperature (rounded to whole numbers) in the field 9x8 after 136 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	14	18	21	21	19	17	12	6
7	13	18	27	35	32	27	21	15	8
8	15	26	45	70	52	37	26	17	9
8	17	33	69	159	76	45	30	19	9
8	17	29	50	76	57	40	28	18	9
7	14	23	33	42	38	31	23	16	8
5	10	15	21	24	24	21	16	11	5
3	5	8	10	11	12	10	8	6	3

Temperature in field 9x8 after 136 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	14	18	21	21	19	17	12	6
7	13	18	27	35	32	27	21	15	8
8	15	26	45	70	52	37	26	17	9
8	17	33	69	159	76	45	30	19	9
8	17	29	50	76	57	40	28	18	9
7	14	23	33	42	38	31	23	16	8
5	10	15	21	24	24	21	16	11	5
3	5	8	10	11	12	10	8	6	3

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	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	14	18	21	21	19	17	12	6
7	13	18	27	35	32	27	21	15	8
8	15	26	45	70	52	37	26	17	9
8	17	33	69	159	76	45	30	19	9
8	17	29	50	76	57	40	28	18	9
7	14	23	33	42	38	31	23	16	8
5	10	15	21	24	24	21	16	11	5
3	5	8	10	11	12	10	8	6	3

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	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	14	18	21	21	19	17	12	6
7	13	18	27	35	32	27	21	15	8
8	15	26	45	70	52	37	26	17	9
8	17	33	69	159	76	45	30	19	9
8	17	29	50	76	57	40	28	18	9
7	14	23	33	42	38	31	23	16	8
5	10	15	21	24	24	21	16	11	5
3	5	8	10	11	12	10	8	6	3