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 160°C heat to the field 5x6
What is the temperature (rounded to whole numbers) in the field 0x5 after 144 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)

3456666642
489111111111074
59121314151513105
611131518232218137
611142032464029189
61117326410874452512
6122145107268117593113
61119377211580482712
48142440554632199
2471218232115105

Temperature in field 0x5 after 144 iterations: