Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 10°C. We apply continuously 159°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 4x9 after 57 iterations according to the Gauss-Seidel iteration

Field in the beginning

10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010

Field after 4 iterations (rounded after 4th iteration)

1233333321
2456666542
3567787753
3678898863
3678101010863
368111515131074
3611243831221594
38225497633620115
31033932511014622115
2721498754281473

Temperature in field 4x9 after 57 iterations: