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 145°C heat to the field 9x0
What is the temperature (rounded to whole numbers) in the field 0x6 after 126 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)

345667112359175
48911111216254361
591213141517222725
6111315161718191913
611141617171817159
611141617181817137
611141617181716126
610131415161514105
4710111212121074
2456666542

Temperature in field 0x6 after 126 iterations: