Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 22°C. We apply continuously 78°C heat to the field 5x3
What is the temperature (rounded to whole numbers) in the field 7x7 after 148 iterations according to the Gauss-Seidel iteration

Field in the beginning

22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22

Field after 4 iterations (rounded after 4th iteration)

3	5	6	7	9	11	10	8	6	3
5	9	11	14	20	27	24	18	12	6
6	11	15	23	39	61	44	29	18	8
7	12	19	31	62	141	67	38	22	10
7	13	19	29	47	69	51	35	22	11
7	13	19	25	34	42	37	29	20	10
7	13	17	22	26	30	28	24	17	9
7	12	15	18	21	22	22	19	14	7
5	9	11	13	15	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2

Temperature in field 7x7 after 148 iterations:

22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22

3	5	6	7	9	11	10	8	6	3
5	9	11	14	20	27	24	18	12	6
6	11	15	23	39	61	44	29	18	8
7	12	19	31	62	141	67	38	22	10
7	13	19	29	47	69	51	35	22	11
7	13	19	25	34	42	37	29	20	10
7	13	17	22	26	30	28	24	17	9
7	12	15	18	21	22	22	19	14	7
5	9	11	13	15	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2

22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22

3	5	6	7	9	11	10	8	6	3
5	9	11	14	20	27	24	18	12	6
6	11	15	23	39	61	44	29	18	8
7	12	19	31	62	141	67	38	22	10
7	13	19	29	47	69	51	35	22	11
7	13	19	25	34	42	37	29	20	10
7	13	17	22	26	30	28	24	17	9
7	12	15	18	21	22	22	19	14	7
5	9	11	13	15	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2

22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22
22	22	22	22	22	22	22	22	22	22

3	5	6	7	9	11	10	8	6	3
5	9	11	14	20	27	24	18	12	6
6	11	15	23	39	61	44	29	18	8
7	12	19	31	62	141	67	38	22	10
7	13	19	29	47	69	51	35	22	11
7	13	19	25	34	42	37	29	20	10
7	13	17	22	26	30	28	24	17	9
7	12	15	18	21	22	22	19	14	7
5	9	11	13	15	16	15	13	9	5
3	5	6	7	8	8	8	7	5	2