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 149°C heat to the field 0x1
What is the temperature (rounded to whole numbers) in the field 7x8 after 90 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)

5737189421110
197773315742110
66472714843211
24241711743211
912107543211
4665432211
2343332211
1222222211
1112211110
0111111100

Temperature in field 7x8 after 90 iterations: