Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 21°C. We apply continuously 84°C heat to the field 5x3
What is the temperature (rounded to whole numbers) in the field 3x8 after 114 iterations according to the Gauss-Seidel iteration

Field in the beginning

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

Field after 4 iterations (rounded after 4th iteration)

3	5	6	7	8	10	10	8	6	3
5	8	10	14	20	28	24	18	12	6
6	10	15	23	40	63	45	29	18	8
7	12	18	32	65	149	70	39	22	10
7	13	19	29	48	72	53	35	22	11
7	13	18	25	34	42	38	29	20	10
7	12	17	21	26	29	28	24	17	9
6	11	15	18	20	22	21	18	13	7
5	8	11	13	14	15	15	13	9	5
2	4	6	7	7	8	7	6	5	2

Temperature in field 3x8 after 114 iterations:

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	8	10	10	8	6	3
5	8	10	14	20	28	24	18	12	6
6	10	15	23	40	63	45	29	18	8
7	12	18	32	65	149	70	39	22	10
7	13	19	29	48	72	53	35	22	11
7	13	18	25	34	42	38	29	20	10
7	12	17	21	26	29	28	24	17	9
6	11	15	18	20	22	21	18	13	7
5	8	11	13	14	15	15	13	9	5
2	4	6	7	7	8	7	6	5	2

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	8	10	10	8	6	3
5	8	10	14	20	28	24	18	12	6
6	10	15	23	40	63	45	29	18	8
7	12	18	32	65	149	70	39	22	10
7	13	19	29	48	72	53	35	22	11
7	13	18	25	34	42	38	29	20	10
7	12	17	21	26	29	28	24	17	9
6	11	15	18	20	22	21	18	13	7
5	8	11	13	14	15	15	13	9	5
2	4	6	7	7	8	7	6	5	2

21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21
21	21	21	21	21	21	21	21	21	21

3	5	6	7	8	10	10	8	6	3
5	8	10	14	20	28	24	18	12	6
6	10	15	23	40	63	45	29	18	8
7	12	18	32	65	149	70	39	22	10
7	13	19	29	48	72	53	35	22	11
7	13	18	25	34	42	38	29	20	10
7	12	17	21	26	29	28	24	17	9
6	11	15	18	20	22	21	18	13	7
5	8	11	13	14	15	15	13	9	5
2	4	6	7	7	8	7	6	5	2