Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 5°C. We apply continuously 168°C heat to the field 1x3
What is the temperature (rounded to whole numbers) in the field 0x3 after 137 iterations according to the Gauss-Seidel iteration

Field in the beginning

5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555

Field after 4 iterations (rounded after 4th iteration)

3886432211
163226171064321
4495613418106431
852611074924138542
50103704023138642
2545392718118642
122121171397542
6101110976432
3566554321
1233322211

Temperature in field 0x3 after 137 iterations: