Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 23°C. We apply continuously 66°C heat to the field 1x2
What is the temperature (rounded to whole numbers) in the field 5x6 after 76 iterations according to the Gauss-Seidel iteration

Field in the beginning

23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323

Field after 4 iterations (rounded after 4th iteration)

91615121098753
224534241916141295
39113553425211916126
2652423226232118137
1730312826242219147
1221242524232220158
916202222222119147
813171919201917126
51012141415141294
3567887642

Temperature in field 5x6 after 76 iterations: