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 162°C heat to the field 1x8
What is the temperature (rounded to whole numbers) in the field 9x1 after 122 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
0111111110
1111121111
1112222211
1222222211
3886432211
15302415953211
428957301584211
7924697411894211
398351261263110

Temperature in field 9x1 after 122 iterations: