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 136°C heat to the field 4x1
What is the temperature (rounded to whole numbers) in the field 8x7 after 89 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	8	19	43	76	49	28	16	10	4
7	16	37	90	225	97	50	29	17	8
8	19	36	66	104	74	49	32	20	10
9	18	30	46	59	52	41	31	21	10
9	18	26	34	40	39	35	28	20	10
9	17	23	28	32	32	30	26	19	10
9	16	21	25	27	28	27	24	18	9
8	14	19	21	23	24	23	20	15	8
6	11	14	16	17	18	17	15	11	5
3	6	7	8	9	9	9	7	5	3

Temperature in field 8x7 after 89 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	8	19	43	76	49	28	16	10	4
7	16	37	90	225	97	50	29	17	8
8	19	36	66	104	74	49	32	20	10
9	18	30	46	59	52	41	31	21	10
9	18	26	34	40	39	35	28	20	10
9	17	23	28	32	32	30	26	19	10
9	16	21	25	27	28	27	24	18	9
8	14	19	21	23	24	23	20	15	8
6	11	14	16	17	18	17	15	11	5
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	8	19	43	76	49	28	16	10	4
7	16	37	90	225	97	50	29	17	8
8	19	36	66	104	74	49	32	20	10
9	18	30	46	59	52	41	31	21	10
9	18	26	34	40	39	35	28	20	10
9	17	23	28	32	32	30	26	19	10
9	16	21	25	27	28	27	24	18	9
8	14	19	21	23	24	23	20	15	8
6	11	14	16	17	18	17	15	11	5
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	8	19	43	76	49	28	16	10	4
7	16	37	90	225	97	50	29	17	8
8	19	36	66	104	74	49	32	20	10
9	18	30	46	59	52	41	31	21	10
9	18	26	34	40	39	35	28	20	10
9	17	23	28	32	32	30	26	19	10
9	16	21	25	27	28	27	24	18	9
8	14	19	21	23	24	23	20	15	8
6	11	14	16	17	18	17	15	11	5
3	6	7	8	9	9	9	7	5	3