Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 1°C. We apply continuously 75°C heat to the field 5x7
What is the temperature (rounded to whole numbers) in the field 4x1 after 52 iterations according to the Gauss-Seidel iteration

Field in the beginning

1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111

Field after 4 iterations (rounded after 4th iteration)

0000000000
0001111100
0011111110
0111111110
0111244321
011381411742
01282343271473
0141443118472194
013112747301683
0026121814852

Temperature in field 4x1 after 52 iterations: