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 136°C heat to the field 7x7
What is the temperature (rounded to whole numbers) in the field 9x3 after 145 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	26	27	26	24	18	10
10	18	23	26	28	28	30	30	24	13
11	18	24	27	28	32	42	50	38	20
10	18	23	26	30	42	68	102	66	31
9	16	21	24	30	50	102	234	100	40
7	12	16	18	24	38	66	100	64	29
4	6	8	10	13	20	31	40	29	15

Temperature in field 9x3 after 145 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	26	27	26	24	18	10
10	18	23	26	28	28	30	30	24	13
11	18	24	27	28	32	42	50	38	20
10	18	23	26	30	42	68	102	66	31
9	16	21	24	30	50	102	234	100	40
7	12	16	18	24	38	66	100	64	29
4	6	8	10	13	20	31	40	29	15

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	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	26	27	26	24	18	10
10	18	23	26	28	28	30	30	24	13
11	18	24	27	28	32	42	50	38	20
10	18	23	26	30	42	68	102	66	31
9	16	21	24	30	50	102	234	100	40
7	12	16	18	24	38	66	100	64	29
4	6	8	10	13	20	31	40	29	15

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	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	26	27	26	24	18	10
10	18	23	26	28	28	30	30	24	13
11	18	24	27	28	32	42	50	38	20
10	18	23	26	30	42	68	102	66	31
9	16	21	24	30	50	102	234	100	40
7	12	16	18	24	38	66	100	64	29
4	6	8	10	13	20	31	40	29	15