Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 3°C. We apply continuously 144°C heat to the field 8x5
What is the temperature (rounded to whole numbers) in the field 4x4 after 134 iterations according to the Gauss-Seidel iteration

Field in the beginning

3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333

Field after 4 iterations (rounded after 4th iteration)

0111111110
1112222221
1122222475
1222336162718
12233516448143
122339298322377
12233823528847
12223614283823
1122248131611
0111123664

Temperature in field 4x4 after 134 iterations: