Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 4°C. We apply continuously 74°C heat to the field 6x1
What is the temperature (rounded to whole numbers) in the field 3x2 after 55 iterations according to the Gauss-Seidel iteration

Field in the beginning

4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444

Field after 4 iterations (rounded after 4th iteration)

11128203823114
1225154311646208
123613294832178
12359172319126
1234710121184
1234578753
1234455542
1233344431
1222333221
0111111110

Temperature in field 3x2 after 55 iterations: