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 172°C heat to the field 3x3
What is the temperature (rounded to whole numbers) in the field 7x5 after 108 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)

0037753210
05173225158421
3175198623316842
7329827010948221152
725621097139211152
5153348392615952
381622211510642
248111196431
1245554321
0122222110

Temperature in field 7x5 after 108 iterations: