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 78°C heat to the field 3x2
What is the temperature (rounded to whole numbers) in the field 8x6 after 127 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)

028141163210
28244528158421
41545123502211531
3122950331910631
28162319138531
248111086421
1346654321
1233333221
1122222111
0111111100

Temperature in field 8x6 after 127 iterations: