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 185°C heat to the field 4x7
What is the temperature (rounded to whole numbers) in the field 6x9 after 148 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	23	24	23	21	16	8
10	17	22	25	27	28	27	24	18	9
10	18	23	29	35	35	32	27	20	10
11	18	28	44	62	55	44	33	23	12
10	21	41	80	132	94	62	41	26	13
10	24	54	128	314	141	75	44	26	12
8	19	41	82	133	92	57	35	21	9
4	11	21	38	53	43	30	19	11	5

Temperature in field 6x9 after 148 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	23	24	23	21	16	8
10	17	22	25	27	28	27	24	18	9
10	18	23	29	35	35	32	27	20	10
11	18	28	44	62	55	44	33	23	12
10	21	41	80	132	94	62	41	26	13
10	24	54	128	314	141	75	44	26	12
8	19	41	82	133	92	57	35	21	9
4	11	21	38	53	43	30	19	11	5

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	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	23	24	23	21	16	8
10	17	22	25	27	28	27	24	18	9
10	18	23	29	35	35	32	27	20	10
11	18	28	44	62	55	44	33	23	12
10	21	41	80	132	94	62	41	26	13
10	24	54	128	314	141	75	44	26	12
8	19	41	82	133	92	57	35	21	9
4	11	21	38	53	43	30	19	11	5

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	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	23	24	23	21	16	8
10	17	22	25	27	28	27	24	18	9
10	18	23	29	35	35	32	27	20	10
11	18	28	44	62	55	44	33	23	12
10	21	41	80	132	94	62	41	26	13
10	24	54	128	314	141	75	44	26	12
8	19	41	82	133	92	57	35	21	9
4	11	21	38	53	43	30	19	11	5