Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 12°C. We apply continuously 94°C heat to the field 2x6
What is the temperature (rounded to whole numbers) in the field 0x7 after 81 iterations according to the Gauss-Seidel iteration

Field in the beginning

12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212

Field after 4 iterations (rounded after 4th iteration)

2334444431
3567777652
3689999863
481213121211974
61626231815131084
133462432819151184
2060156693622161284
163966473020151174
9213127201511853
4913121086431

Temperature in field 0x7 after 81 iterations: