Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 17°C. We apply continuously 199°C heat to the field 3x5
What is the temperature (rounded to whole numbers) in the field 0x5 after 78 iterations according to the Gauss-Seidel iteration

Field in the beginning

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

Field after 4 iterations (rounded after 4th iteration)

2	4	5	5	6	6	6	5	4	2
4	7	8	10	11	11	10	9	7	4
5	8	14	20	20	18	15	13	9	5
5	14	31	49	42	31	23	17	11	6
9	29	71	126	85	52	32	21	14	7
14	46	125	326	140	70	40	25	15	7
13	38	83	138	95	59	37	24	15	7
10	25	47	67	57	42	29	20	13	6
6	15	25	33	32	26	20	14	9	4
3	7	11	14	14	13	10	7	5	2

Temperature in field 0x5 after 78 iterations:

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

2	4	5	5	6	6	6	5	4	2
4	7	8	10	11	11	10	9	7	4
5	8	14	20	20	18	15	13	9	5
5	14	31	49	42	31	23	17	11	6
9	29	71	126	85	52	32	21	14	7
14	46	125	326	140	70	40	25	15	7
13	38	83	138	95	59	37	24	15	7
10	25	47	67	57	42	29	20	13	6
6	15	25	33	32	26	20	14	9	4
3	7	11	14	14	13	10	7	5	2

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

2	4	5	5	6	6	6	5	4	2
4	7	8	10	11	11	10	9	7	4
5	8	14	20	20	18	15	13	9	5
5	14	31	49	42	31	23	17	11	6
9	29	71	126	85	52	32	21	14	7
14	46	125	326	140	70	40	25	15	7
13	38	83	138	95	59	37	24	15	7
10	25	47	67	57	42	29	20	13	6
6	15	25	33	32	26	20	14	9	4
3	7	11	14	14	13	10	7	5	2

17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17
17	17	17	17	17	17	17	17	17	17

2	4	5	5	6	6	6	5	4	2
4	7	8	10	11	11	10	9	7	4
5	8	14	20	20	18	15	13	9	5
5	14	31	49	42	31	23	17	11	6
9	29	71	126	85	52	32	21	14	7
14	46	125	326	140	70	40	25	15	7
13	38	83	138	95	59	37	24	15	7
10	25	47	67	57	42	29	20	13	6
6	15	25	33	32	26	20	14	9	4
3	7	11	14	14	13	10	7	5	2