Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 31°C. We apply continuously 168°C heat to the field 1x2
What is the temperature (rounded to whole numbers) in the field 3x5 after 30 iterations according to the Gauss-Seidel iteration

Field in the beginning

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

Field after 4 iterations (rounded after 4th iteration)

18	35	30	22	16	13	11	10	7	4
50	104	73	47	32	25	21	17	13	6
92	274	122	66	43	32	27	22	16	8
59	118	88	60	44	35	30	25	18	10
34	60	58	49	41	35	31	27	20	10
21	36	41	39	36	34	31	27	20	10
15	26	31	33	32	31	30	26	19	10
11	19	24	27	27	27	26	23	17	8
8	14	17	19	20	20	19	17	12	6
4	7	9	10	10	11	10	8	6	3

Temperature in field 3x5 after 30 iterations:

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

18	35	30	22	16	13	11	10	7	4
50	104	73	47	32	25	21	17	13	6
92	274	122	66	43	32	27	22	16	8
59	118	88	60	44	35	30	25	18	10
34	60	58	49	41	35	31	27	20	10
21	36	41	39	36	34	31	27	20	10
15	26	31	33	32	31	30	26	19	10
11	19	24	27	27	27	26	23	17	8
8	14	17	19	20	20	19	17	12	6
4	7	9	10	10	11	10	8	6	3

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

18	35	30	22	16	13	11	10	7	4
50	104	73	47	32	25	21	17	13	6
92	274	122	66	43	32	27	22	16	8
59	118	88	60	44	35	30	25	18	10
34	60	58	49	41	35	31	27	20	10
21	36	41	39	36	34	31	27	20	10
15	26	31	33	32	31	30	26	19	10
11	19	24	27	27	27	26	23	17	8
8	14	17	19	20	20	19	17	12	6
4	7	9	10	10	11	10	8	6	3

31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31
31	31	31	31	31	31	31	31	31	31

18	35	30	22	16	13	11	10	7	4
50	104	73	47	32	25	21	17	13	6
92	274	122	66	43	32	27	22	16	8
59	118	88	60	44	35	30	25	18	10
34	60	58	49	41	35	31	27	20	10
21	36	41	39	36	34	31	27	20	10
15	26	31	33	32	31	30	26	19	10
11	19	24	27	27	27	26	23	17	8
8	14	17	19	20	20	19	17	12	6
4	7	9	10	10	11	10	8	6	3