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 164°C heat to the field 4x7
What is the temperature (rounded to whole numbers) in the field 9x8 after 126 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	6	3
6	11	13	15	16	16	16	14	11	6
8	13	17	19	20	20	20	18	14	7
9	15	19	21	23	24	23	21	16	8
9	16	20	25	31	31	28	24	18	9
9	16	24	39	54	48	38	29	20	10
9	18	36	71	117	83	54	36	23	11
9	21	48	113	278	124	66	39	23	11
7	17	36	72	117	81	51	31	18	8
4	9	19	34	47	38	26	17	10	5

Temperature in field 9x8 after 126 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	6	3
6	11	13	15	16	16	16	14	11	6
8	13	17	19	20	20	20	18	14	7
9	15	19	21	23	24	23	21	16	8
9	16	20	25	31	31	28	24	18	9
9	16	24	39	54	48	38	29	20	10
9	18	36	71	117	83	54	36	23	11
9	21	48	113	278	124	66	39	23	11
7	17	36	72	117	81	51	31	18	8
4	9	19	34	47	38	26	17	10	5

27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	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	6	3
6	11	13	15	16	16	16	14	11	6
8	13	17	19	20	20	20	18	14	7
9	15	19	21	23	24	23	21	16	8
9	16	20	25	31	31	28	24	18	9
9	16	24	39	54	48	38	29	20	10
9	18	36	71	117	83	54	36	23	11
9	21	48	113	278	124	66	39	23	11
7	17	36	72	117	81	51	31	18	8
4	9	19	34	47	38	26	17	10	5

27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	27	27	27	27
27	27	27	27	27	27	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	6	3
6	11	13	15	16	16	16	14	11	6
8	13	17	19	20	20	20	18	14	7
9	15	19	21	23	24	23	21	16	8
9	16	20	25	31	31	28	24	18	9
9	16	24	39	54	48	38	29	20	10
9	18	36	71	117	83	54	36	23	11
9	21	48	113	278	124	66	39	23	11
7	17	36	72	117	81	51	31	18	8
4	9	19	34	47	38	26	17	10	5