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 139°C heat to the field 5x6
What is the temperature (rounded to whole numbers) in the field 4x4 after 130 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	21	21	19	14	7
9	15	19	21	25	29	28	24	17	9
9	16	20	26	37	50	44	33	22	11
9	16	23	36	65	104	74	48	29	14
9	16	26	48	102	242	111	59	33	15
8	15	23	40	71	109	78	49	29	13
6	11	17	27	41	54	46	33	21	10
3	6	9	13	19	23	21	16	10	5

Temperature in field 4x4 after 130 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	21	21	19	14	7
9	15	19	21	25	29	28	24	17	9
9	16	20	26	37	50	44	33	22	11
9	16	23	36	65	104	74	48	29	14
9	16	26	48	102	242	111	59	33	15
8	15	23	40	71	109	78	49	29	13
6	11	17	27	41	54	46	33	21	10
3	6	9	13	19	23	21	16	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	21	21	19	14	7
9	15	19	21	25	29	28	24	17	9
9	16	20	26	37	50	44	33	22	11
9	16	23	36	65	104	74	48	29	14
9	16	26	48	102	242	111	59	33	15
8	15	23	40	71	109	78	49	29	13
6	11	17	27	41	54	46	33	21	10
3	6	9	13	19	23	21	16	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	21	21	19	14	7
9	15	19	21	25	29	28	24	17	9
9	16	20	26	37	50	44	33	22	11
9	16	23	36	65	104	74	48	29	14
9	16	26	48	102	242	111	59	33	15
8	15	23	40	71	109	78	49	29	13
6	11	17	27	41	54	46	33	21	10
3	6	9	13	19	23	21	16	10	5