Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 20°C. We apply continuously 180°C heat to the field 0x7
What is the temperature (rounded to whole numbers) in the field 7x4 after 122 iterations according to the Gauss-Seidel iteration

Field in the beginning

20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020

Field after 4 iterations (rounded after 4th iteration)

3566777652
5810111212121084
610131415151513105
712151617171715116
1218191919191816126
3033282421201917137
8364433024211917126
246106553424201815115
836441272016141184
272821151197642

Temperature in field 7x4 after 122 iterations: