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 145°C heat to the field 1x3
What is the temperature (rounded to whole numbers) in the field 3x5 after 72 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)

2664211000
13262112732110
378051271363210
7222490391884211
428758321684211
203731201274211
9161612853211
4786532110
2343321110
1121111100

Temperature in field 3x5 after 72 iterations: