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 186°C heat to the field 7x1
What is the temperature (rounded to whole numbers) in the field 5x3 after 96 iterations according to the Gauss-Seidel iteration

Field in the beginning

31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131

Field after 4 iterations (rounded after 4th iteration)

479101327581026026
7121518255112030212246
91519233049881358740
10172225314259735629
10182326303644473821
11182427293336352816
10182326283031292312
916212325262624189
712161819201917126
4689101010963

Temperature in field 5x3 after 96 iterations: