Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 18°C. We apply continuously 114°C heat to the field 2x6
What is the temperature (rounded to whole numbers) in the field 8x2 after 41 iterations according to the Gauss-Seidel iteration

Field in the beginning

18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818

Field after 4 iterations (rounded after 4th iteration)

3456666542
47910101110974
5912131414141295
612171918171614105
921343125211815116
1644785637272117126
25741918647302217126
2049835939272116115
122739352620151284
612171613108642

Temperature in field 8x2 after 41 iterations: