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 150°C heat to the field 0x3
What is the temperature (rounded to whole numbers) in the field 3x3 after 50 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)

7	9	9	8	7	7	6	6	4	2
23	25	20	16	14	12	12	10	8	4
69	53	35	25	19	17	15	13	10	5
206	90	48	31	23	19	17	15	11	6
73	59	41	30	24	21	18	16	12	6
30	35	31	26	23	20	19	16	12	6
15	22	23	22	21	19	18	16	12	6
9	15	17	18	17	17	16	14	10	5
6	10	12	12	13	13	12	10	7	4
3	5	6	6	7	7	6	5	4	2

Temperature in field 3x3 after 50 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

7	9	9	8	7	7	6	6	4	2
23	25	20	16	14	12	12	10	8	4
69	53	35	25	19	17	15	13	10	5
206	90	48	31	23	19	17	15	11	6
73	59	41	30	24	21	18	16	12	6
30	35	31	26	23	20	19	16	12	6
15	22	23	22	21	19	18	16	12	6
9	15	17	18	17	17	16	14	10	5
6	10	12	12	13	13	12	10	7	4
3	5	6	6	7	7	6	5	4	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

7	9	9	8	7	7	6	6	4	2
23	25	20	16	14	12	12	10	8	4
69	53	35	25	19	17	15	13	10	5
206	90	48	31	23	19	17	15	11	6
73	59	41	30	24	21	18	16	12	6
30	35	31	26	23	20	19	16	12	6
15	22	23	22	21	19	18	16	12	6
9	15	17	18	17	17	16	14	10	5
6	10	12	12	13	13	12	10	7	4
3	5	6	6	7	7	6	5	4	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

7	9	9	8	7	7	6	6	4	2
23	25	20	16	14	12	12	10	8	4
69	53	35	25	19	17	15	13	10	5
206	90	48	31	23	19	17	15	11	6
73	59	41	30	24	21	18	16	12	6
30	35	31	26	23	20	19	16	12	6
15	22	23	22	21	19	18	16	12	6
9	15	17	18	17	17	16	14	10	5
6	10	12	12	13	13	12	10	7	4
3	5	6	6	7	7	6	5	4	2