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 63°C heat to the field 6x3
What is the temperature (rounded to whole numbers) in the field 2x6 after 61 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)

3456679863
4891113172219136
591214203350352110
61114182752114542812
6111418264056412512
6111518232934292010
611141720232522168
610131517181917126
4710111213131184
2456677642

Temperature in field 2x6 after 61 iterations: