Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 22°C. We apply continuously 198°C heat to the field 3x8
What is the temperature (rounded to whole numbers) in the field 5x4 after 145 iterations according to the Gauss-Seidel iteration

Field in the beginning

22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222

Field after 4 iterations (rounded after 4th iteration)

3567777753
5911121313131194
611141516171615116
712151718191917137
713161921212018137
713202728262320147
717355447372822158
10307212786533423157
1343120317132633521126
927631117038211273

Temperature in field 5x4 after 145 iterations: