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 79°C heat to the field 5x1
What is the temperature (rounded to whole numbers) in the field 9x3 after 56 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	10	16	30	49	33	20	11	5
7	12	18	30	60	139	64	35	20	9
8	15	21	31	49	71	53	36	23	11
9	16	22	29	38	46	41	33	22	11
10	17	23	28	33	36	34	29	21	11
10	17	23	26	29	31	31	27	20	11
10	17	22	25	27	29	28	25	19	10
9	15	19	22	24	25	24	22	16	8
7	11	15	17	18	18	18	16	11	6
3	6	8	9	9	10	9	8	6	3

Temperature in field 9x3 after 56 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	10	16	30	49	33	20	11	5
7	12	18	30	60	139	64	35	20	9
8	15	21	31	49	71	53	36	23	11
9	16	22	29	38	46	41	33	22	11
10	17	23	28	33	36	34	29	21	11
10	17	23	26	29	31	31	27	20	11
10	17	22	25	27	29	28	25	19	10
9	15	19	22	24	25	24	22	16	8
7	11	15	17	18	18	18	16	11	6
3	6	8	9	9	10	9	8	6	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	10	16	30	49	33	20	11	5
7	12	18	30	60	139	64	35	20	9
8	15	21	31	49	71	53	36	23	11
9	16	22	29	38	46	41	33	22	11
10	17	23	28	33	36	34	29	21	11
10	17	23	26	29	31	31	27	20	11
10	17	22	25	27	29	28	25	19	10
9	15	19	22	24	25	24	22	16	8
7	11	15	17	18	18	18	16	11	6
3	6	8	9	9	10	9	8	6	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	10	16	30	49	33	20	11	5
7	12	18	30	60	139	64	35	20	9
8	15	21	31	49	71	53	36	23	11
9	16	22	29	38	46	41	33	22	11
10	17	23	28	33	36	34	29	21	11
10	17	23	26	29	31	31	27	20	11
10	17	22	25	27	29	28	25	19	10
9	15	19	22	24	25	24	22	16	8
7	11	15	17	18	18	18	16	11	6
3	6	8	9	9	10	9	8	6	3