Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 19°C. We apply continuously 110°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 3x3 after 80 iterations according to the Gauss-Seidel iteration

Field in the beginning

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

Field after 4 iterations (rounded after 4th iteration)

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	18	17	16	12	6
6	11	14	18	22	22	20	17	13	7
6	11	17	27	37	33	26	20	14	7
6	12	23	46	77	54	35	23	14	7
5	12	29	71	181	78	39	22	12	6
3	7	18	38	64	41	23	13	7	3

Temperature in field 3x3 after 80 iterations:

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	18	17	16	12	6
6	11	14	18	22	22	20	17	13	7
6	11	17	27	37	33	26	20	14	7
6	12	23	46	77	54	35	23	14	7
5	12	29	71	181	78	39	22	12	6
3	7	18	38	64	41	23	13	7	3

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	18	17	16	12	6
6	11	14	18	22	22	20	17	13	7
6	11	17	27	37	33	26	20	14	7
6	12	23	46	77	54	35	23	14	7
5	12	29	71	181	78	39	22	12	6
3	7	18	38	64	41	23	13	7	3

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19

3	4	5	6	6	6	6	6	4	2
4	8	9	11	11	11	11	10	7	4
5	9	12	13	14	14	14	13	10	5
6	11	13	15	16	16	16	14	11	6
6	11	14	16	17	18	17	16	12	6
6	11	14	18	22	22	20	17	13	7
6	11	17	27	37	33	26	20	14	7
6	12	23	46	77	54	35	23	14	7
5	12	29	71	181	78	39	22	12	6
3	7	18	38	64	41	23	13	7	3