Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 4°C. We apply continuously 118°C heat to the field 6x7
What is the temperature (rounded to whole numbers) in the field 2x1 after 70 iterations according to the Gauss-Seidel iteration

Field in the beginning

4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444

Field after 4 iterations (rounded after 4th iteration)

1111111110
1222222221
1233333321
1233334431
1233458853
12336152520126
1235153870452410
12382470188763313
1237194375482611
011410202922136

Temperature in field 2x1 after 70 iterations: