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 170°C heat to the field 5x2
What is the temperature (rounded to whole numbers) in the field 9x7 after 42 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)

00041629221363
0031750966031146
017319626610646208
01725611076938198
0151532473824146
01381521191494
012471010853
0112455432
0011222221
0001111110

Temperature in field 9x7 after 42 iterations: