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 72°C heat to the field 3x7
What is the temperature (rounded to whole numbers) in the field 6x8 after 75 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	17	16	14	11	6
6	11	15	19	20	19	18	16	12	6
6	13	21	29	27	24	21	17	12	6
7	18	35	57	42	31	23	18	13	6
9	23	53	127	60	35	24	17	12	6
7	17	35	55	40	27	19	13	9	4
4	9	16	22	19	14	10	7	5	2

Temperature in field 6x8 after 75 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	17	16	14	11	6
6	11	15	19	20	19	18	16	12	6
6	13	21	29	27	24	21	17	12	6
7	18	35	57	42	31	23	18	13	6
9	23	53	127	60	35	24	17	12	6
7	17	35	55	40	27	19	13	9	4
4	9	16	22	19	14	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	14	14	13	10	5
6	11	13	15	16	17	16	14	11	6
6	11	15	19	20	19	18	16	12	6
6	13	21	29	27	24	21	17	12	6
7	18	35	57	42	31	23	18	13	6
9	23	53	127	60	35	24	17	12	6
7	17	35	55	40	27	19	13	9	4
4	9	16	22	19	14	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	14	14	13	10	5
6	11	13	15	16	17	16	14	11	6
6	11	15	19	20	19	18	16	12	6
6	13	21	29	27	24	21	17	12	6
7	18	35	57	42	31	23	18	13	6
9	23	53	127	60	35	24	17	12	6
7	17	35	55	40	27	19	13	9	4
4	9	16	22	19	14	10	7	5	2