Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 23°C. We apply continuously 111°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 7x5 after 73 iterations according to the Gauss-Seidel iteration

Field in the beginning

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

Field after 4 iterations (rounded after 4th iteration)

3	5	7	7	8	8	8	7	5	3
5	9	11	13	13	14	13	12	9	5
7	11	14	16	17	17	17	15	12	6
7	13	16	18	19	20	19	17	13	7
8	13	17	19	21	22	21	19	14	7
8	14	17	21	25	26	24	21	15	8
8	13	20	30	41	37	30	23	16	8
7	14	26	50	81	58	38	26	16	8
6	13	31	74	185	81	42	24	14	6
3	8	19	39	66	43	25	14	8	4

Temperature in field 7x5 after 73 iterations:

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

3	5	7	7	8	8	8	7	5	3
5	9	11	13	13	14	13	12	9	5
7	11	14	16	17	17	17	15	12	6
7	13	16	18	19	20	19	17	13	7
8	13	17	19	21	22	21	19	14	7
8	14	17	21	25	26	24	21	15	8
8	13	20	30	41	37	30	23	16	8
7	14	26	50	81	58	38	26	16	8
6	13	31	74	185	81	42	24	14	6
3	8	19	39	66	43	25	14	8	4

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

3	5	7	7	8	8	8	7	5	3
5	9	11	13	13	14	13	12	9	5
7	11	14	16	17	17	17	15	12	6
7	13	16	18	19	20	19	17	13	7
8	13	17	19	21	22	21	19	14	7
8	14	17	21	25	26	24	21	15	8
8	13	20	30	41	37	30	23	16	8
7	14	26	50	81	58	38	26	16	8
6	13	31	74	185	81	42	24	14	6
3	8	19	39	66	43	25	14	8	4

23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23
23	23	23	23	23	23	23	23	23	23

3	5	7	7	8	8	8	7	5	3
5	9	11	13	13	14	13	12	9	5
7	11	14	16	17	17	17	15	12	6
7	13	16	18	19	20	19	17	13	7
8	13	17	19	21	22	21	19	14	7
8	14	17	21	25	26	24	21	15	8
8	13	20	30	41	37	30	23	16	8
7	14	26	50	81	58	38	26	16	8
6	13	31	74	185	81	42	24	14	6
3	8	19	39	66	43	25	14	8	4