Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 16°C. We apply continuously 78°C heat to the field 7x8
What is the temperature (rounded to whole numbers) in the field 3x2 after 140 iterations according to the Gauss-Seidel iteration

Field in the beginning

16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16

Field after 4 iterations (rounded after 4th iteration)

2	4	5	5	5	5	5	5	4	2
4	6	8	9	9	9	9	8	6	3
5	8	10	11	12	12	12	11	8	4
5	9	11	13	13	14	13	12	9	5
5	9	12	13	14	15	14	13	10	5
5	9	12	14	15	15	16	16	13	7
5	9	12	13	14	17	22	27	21	11
5	8	11	12	14	21	36	55	35	16
4	6	8	9	13	24	53	128	52	20
2	3	4	5	8	14	28	46	27	12

Temperature in field 3x2 after 140 iterations:

16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16

2	4	5	5	5	5	5	5	4	2
4	6	8	9	9	9	9	8	6	3
5	8	10	11	12	12	12	11	8	4
5	9	11	13	13	14	13	12	9	5
5	9	12	13	14	15	14	13	10	5
5	9	12	14	15	15	16	16	13	7
5	9	12	13	14	17	22	27	21	11
5	8	11	12	14	21	36	55	35	16
4	6	8	9	13	24	53	128	52	20
2	3	4	5	8	14	28	46	27	12

16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16

2	4	5	5	5	5	5	5	4	2
4	6	8	9	9	9	9	8	6	3
5	8	10	11	12	12	12	11	8	4
5	9	11	13	13	14	13	12	9	5
5	9	12	13	14	15	14	13	10	5
5	9	12	14	15	15	16	16	13	7
5	9	12	13	14	17	22	27	21	11
5	8	11	12	14	21	36	55	35	16
4	6	8	9	13	24	53	128	52	20
2	3	4	5	8	14	28	46	27	12

16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16
16	16	16	16	16	16	16	16	16	16

2	4	5	5	5	5	5	5	4	2
4	6	8	9	9	9	9	8	6	3
5	8	10	11	12	12	12	11	8	4
5	9	11	13	13	14	13	12	9	5
5	9	12	13	14	15	14	13	10	5
5	9	12	14	15	15	16	16	13	7
5	9	12	13	14	17	22	27	21	11
5	8	11	12	14	21	36	55	35	16
4	6	8	9	13	24	53	128	52	20
2	3	4	5	8	14	28	46	27	12