Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 27°C. We apply continuously 79°C heat to the field 9x3
What is the temperature (rounded to whole numbers) in the field 7x8 after 53 iterations according to the Gauss-Seidel iteration

Field in the beginning

27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27

Field after 4 iterations (rounded after 4th iteration)

4	6	8	9	9	9	9	8	7	5
6	11	13	15	16	16	16	16	17	16
8	13	17	19	20	20	21	25	34	40
9	15	19	21	23	23	26	34	55	114
9	16	20	23	24	25	27	32	39	44
9	16	20	23	25	26	27	28	28	21
9	16	20	23	24	25	25	25	21	13
8	14	18	20	22	22	22	21	16	9
6	11	14	15	16	17	17	15	11	6
3	6	7	8	9	9	9	7	5	3

Temperature in field 7x8 after 53 iterations:

27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27

4	6	8	9	9	9	9	8	7	5
6	11	13	15	16	16	16	16	17	16
8	13	17	19	20	20	21	25	34	40
9	15	19	21	23	23	26	34	55	114
9	16	20	23	24	25	27	32	39	44
9	16	20	23	25	26	27	28	28	21
9	16	20	23	24	25	25	25	21	13
8	14	18	20	22	22	22	21	16	9
6	11	14	15	16	17	17	15	11	6
3	6	7	8	9	9	9	7	5	3

27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27

4	6	8	9	9	9	9	8	7	5
6	11	13	15	16	16	16	16	17	16
8	13	17	19	20	20	21	25	34	40
9	15	19	21	23	23	26	34	55	114
9	16	20	23	24	25	27	32	39	44
9	16	20	23	25	26	27	28	28	21
9	16	20	23	24	25	25	25	21	13
8	14	18	20	22	22	22	21	16	9
6	11	14	15	16	17	17	15	11	6
3	6	7	8	9	9	9	7	5	3

27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27

4	6	8	9	9	9	9	8	7	5
6	11	13	15	16	16	16	16	17	16
8	13	17	19	20	20	21	25	34	40
9	15	19	21	23	23	26	34	55	114
9	16	20	23	24	25	27	32	39	44
9	16	20	23	25	26	27	28	28	21
9	16	20	23	24	25	25	25	21	13
8	14	18	20	22	22	22	21	16	9
6	11	14	15	16	17	17	15	11	6
3	6	7	8	9	9	9	7	5	3