Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 19°C. We apply continuously 115°C heat to the field 1x2
What is the temperature (rounded to whole numbers) in the field 0x9 after 84 iterations according to the Gauss-Seidel iteration

Field in the beginning

19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919

Field after 4 iterations (rounded after 4th iteration)

122320141087642
347049312015131184
62186824428201714105
3979584028221916116
2240383126221916126
1424262523211917126
916202120191816126
712151717171614105
5811121212121074
2456666542

Temperature in field 0x9 after 84 iterations: