Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 29°C. We apply continuously 145°C heat to the field 6x3
What is the temperature (rounded to whole numbers) in the field 8x1 after 142 iterations according to the Gauss-Seidel iteration

Field in the beginning

29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29

Field after 4 iterations (rounded after 4th iteration)

4	7	8	9	10	12	15	14	10	5
7	12	14	16	20	31	43	35	23	11
8	14	18	23	35	64	103	70	41	19
9	16	21	29	50	107	251	112	55	24
10	17	22	30	46	77	116	82	49	23
10	17	23	28	38	53	66	55	38	19
10	17	22	26	32	39	44	39	29	15
9	15	20	23	26	30	31	28	21	11
7	11	15	17	19	21	21	19	14	7
3	6	8	9	10	10	10	9	7	3

Temperature in field 8x1 after 142 iterations:

29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29

4	7	8	9	10	12	15	14	10	5
7	12	14	16	20	31	43	35	23	11
8	14	18	23	35	64	103	70	41	19
9	16	21	29	50	107	251	112	55	24
10	17	22	30	46	77	116	82	49	23
10	17	23	28	38	53	66	55	38	19
10	17	22	26	32	39	44	39	29	15
9	15	20	23	26	30	31	28	21	11
7	11	15	17	19	21	21	19	14	7
3	6	8	9	10	10	10	9	7	3

29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29

4	7	8	9	10	12	15	14	10	5
7	12	14	16	20	31	43	35	23	11
8	14	18	23	35	64	103	70	41	19
9	16	21	29	50	107	251	112	55	24
10	17	22	30	46	77	116	82	49	23
10	17	23	28	38	53	66	55	38	19
10	17	22	26	32	39	44	39	29	15
9	15	20	23	26	30	31	28	21	11
7	11	15	17	19	21	21	19	14	7
3	6	8	9	10	10	10	9	7	3

29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29
29	29	29	29	29	29	29	29	29	29

4	7	8	9	10	12	15	14	10	5
7	12	14	16	20	31	43	35	23	11
8	14	18	23	35	64	103	70	41	19
9	16	21	29	50	107	251	112	55	24
10	17	22	30	46	77	116	82	49	23
10	17	23	28	38	53	66	55	38	19
10	17	22	26	32	39	44	39	29	15
9	15	20	23	26	30	31	28	21	11
7	11	15	17	19	21	21	19	14	7
3	6	8	9	10	10	10	9	7	3