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 104°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 1x9 after 87 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	26	36	32	26	20	14	7
6	12	23	45	73	52	34	22	14	7
5	12	28	68	172	74	38	21	12	5
3	7	17	36	61	39	22	13	7	3

Temperature in field 1x9 after 87 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	26	36	32	26	20	14	7
6	12	23	45	73	52	34	22	14	7
5	12	28	68	172	74	38	21	12	5
3	7	17	36	61	39	22	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	26	36	32	26	20	14	7
6	12	23	45	73	52	34	22	14	7
5	12	28	68	172	74	38	21	12	5
3	7	17	36	61	39	22	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	26	36	32	26	20	14	7
6	12	23	45	73	52	34	22	14	7
5	12	28	68	172	74	38	21	12	5
3	7	17	36	61	39	22	13	7	3