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 144°C heat to the field 5x3
What is the temperature (rounded to whole numbers) in the field 9x7 after 42 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)

4	7	9	10	13	16	16	13	9	4
7	12	15	21	32	44	38	28	18	9
9	15	22	36	65	105	74	47	28	13
10	18	28	50	107	252	116	62	35	16
10	19	28	46	78	118	86	56	34	16
11	19	27	38	54	68	60	46	30	15
10	18	25	32	40	46	44	36	26	13
9	16	22	26	31	33	33	28	20	10
7	12	16	19	21	23	22	19	14	7
4	6	8	10	11	11	11	10	7	3

Temperature in field 9x7 after 42 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

4	7	9	10	13	16	16	13	9	4
7	12	15	21	32	44	38	28	18	9
9	15	22	36	65	105	74	47	28	13
10	18	28	50	107	252	116	62	35	16
10	19	28	46	78	118	86	56	34	16
11	19	27	38	54	68	60	46	30	15
10	18	25	32	40	46	44	36	26	13
9	16	22	26	31	33	33	28	20	10
7	12	16	19	21	23	22	19	14	7
4	6	8	10	11	11	11	10	7	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

4	7	9	10	13	16	16	13	9	4
7	12	15	21	32	44	38	28	18	9
9	15	22	36	65	105	74	47	28	13
10	18	28	50	107	252	116	62	35	16
10	19	28	46	78	118	86	56	34	16
11	19	27	38	54	68	60	46	30	15
10	18	25	32	40	46	44	36	26	13
9	16	22	26	31	33	33	28	20	10
7	12	16	19	21	23	22	19	14	7
4	6	8	10	11	11	11	10	7	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

4	7	9	10	13	16	16	13	9	4
7	12	15	21	32	44	38	28	18	9
9	15	22	36	65	105	74	47	28	13
10	18	28	50	107	252	116	62	35	16
10	19	28	46	78	118	86	56	34	16
11	19	27	38	54	68	60	46	30	15
10	18	25	32	40	46	44	36	26	13
9	16	22	26	31	33	33	28	20	10
7	12	16	19	21	23	22	19	14	7
4	6	8	10	11	11	11	10	7	3