Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 24°C. We apply continuously 172°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 5x7 after 59 iterations according to the Gauss-Seidel iteration

Field in the beginning

24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424

Field after 4 iterations (rounded after 4th iteration)

3678888753
61012131414141395
712151718181816126
813171920212018147
814182022232220158
814182329292622168
814223752463627189
7153368116805031199
616421082791185831178
411265799623519104

Temperature in field 5x7 after 59 iterations: