Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 11°C. We apply continuously 81°C heat to the field 4x5
What is the temperature (rounded to whole numbers) in the field 5x2 after 47 iterations according to the Gauss-Seidel iteration

Field in the beginning

11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111
11111111111111111111

Field after 4 iterations (rounded after 4th iteration)

2334444321
3456777642
3579111110863
4610162421161284
48163355392516105
4102355137613219115
49203860432818115
4814233127201494
359131616131063
1346776532

Temperature in field 5x2 after 47 iterations: