Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 2°C. We apply continuously 148°C heat to the field 5x5
What is the temperature (rounded to whole numbers) in the field 6x5 after 30 iterations according to the Gauss-Seidel iteration

Field in the beginning

2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222

Field after 4 iterations (rounded after 4th iteration)

0011111100
0111122211
1111477531
11151628221473
1141645855428146
12728852339442198
1272254946134177
1251428423422126
01371419171284
0113687642

Temperature in field 6x5 after 30 iterations: