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 61°C heat to the field 4x6
What is the temperature (rounded to whole numbers) in the field 2x9 after 58 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	15	14	13	10	5
6	11	13	16	18	19	18	15	11	6
6	11	16	22	28	26	22	18	13	7
6	12	20	34	52	39	29	21	14	7
7	13	25	50	112	56	34	23	15	7
6	12	21	36	53	40	29	20	13	6
5	9	15	22	28	25	20	15	10	5
2	5	7	10	12	12	10	7	5	2

Temperature in field 2x9 after 58 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	15	14	13	10	5
6	11	13	16	18	19	18	15	11	6
6	11	16	22	28	26	22	18	13	7
6	12	20	34	52	39	29	21	14	7
7	13	25	50	112	56	34	23	15	7
6	12	21	36	53	40	29	20	13	6
5	9	15	22	28	25	20	15	10	5
2	5	7	10	12	12	10	7	5	2

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	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	15	14	13	10	5
6	11	13	16	18	19	18	15	11	6
6	11	16	22	28	26	22	18	13	7
6	12	20	34	52	39	29	21	14	7
7	13	25	50	112	56	34	23	15	7
6	12	21	36	53	40	29	20	13	6
5	9	15	22	28	25	20	15	10	5
2	5	7	10	12	12	10	7	5	2

19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	19	19	19	19
19	19	19	19	19	19	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	15	14	13	10	5
6	11	13	16	18	19	18	15	11	6
6	11	16	22	28	26	22	18	13	7
6	12	20	34	52	39	29	21	14	7
7	13	25	50	112	56	34	23	15	7
6	12	21	36	53	40	29	20	13	6
5	9	15	22	28	25	20	15	10	5
2	5	7	10	12	12	10	7	5	2