Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 34°C. We apply continuously 197°C heat to the field 4x7
What is the temperature (rounded to whole numbers) in the field 1x1 after 74 iterations according to the Gauss-Seidel iteration

Field in the beginning

34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34

Field after 4 iterations (rounded after 4th iteration)

5	8	10	11	11	12	11	10	8	4
8	14	17	19	20	20	20	18	13	7
10	17	21	24	25	26	25	23	17	9
11	19	24	27	29	30	29	26	20	10
11	20	25	32	38	38	35	30	22	11
12	20	30	48	66	60	48	36	25	13
11	23	44	86	141	101	66	44	28	14
11	26	58	137	335	151	80	48	28	13
9	21	45	88	142	99	62	38	22	10
5	11	23	41	56	46	32	21	12	6

Temperature in field 1x1 after 74 iterations:

34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34

5	8	10	11	11	12	11	10	8	4
8	14	17	19	20	20	20	18	13	7
10	17	21	24	25	26	25	23	17	9
11	19	24	27	29	30	29	26	20	10
11	20	25	32	38	38	35	30	22	11
12	20	30	48	66	60	48	36	25	13
11	23	44	86	141	101	66	44	28	14
11	26	58	137	335	151	80	48	28	13
9	21	45	88	142	99	62	38	22	10
5	11	23	41	56	46	32	21	12	6

34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34

5	8	10	11	11	12	11	10	8	4
8	14	17	19	20	20	20	18	13	7
10	17	21	24	25	26	25	23	17	9
11	19	24	27	29	30	29	26	20	10
11	20	25	32	38	38	35	30	22	11
12	20	30	48	66	60	48	36	25	13
11	23	44	86	141	101	66	44	28	14
11	26	58	137	335	151	80	48	28	13
9	21	45	88	142	99	62	38	22	10
5	11	23	41	56	46	32	21	12	6

34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34
34	34	34	34	34	34	34	34	34	34

5	8	10	11	11	12	11	10	8	4
8	14	17	19	20	20	20	18	13	7
10	17	21	24	25	26	25	23	17	9
11	19	24	27	29	30	29	26	20	10
11	20	25	32	38	38	35	30	22	11
12	20	30	48	66	60	48	36	25	13
11	23	44	86	141	101	66	44	28	14
11	26	58	137	335	151	80	48	28	13
9	21	45	88	142	99	62	38	22	10
5	11	23	41	56	46	32	21	12	6