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 182°C heat to the field 6x5
What is the temperature (rounded to whole numbers) in the field 9x6 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)

3577888753
59111313141413105
711141617202422168
7131618243752432814
81317223874123834721
8141827541243061326327
81318264685134925324
7121622345268563718
591216223036322211
356811141614105

Temperature in field 9x6 after 76 iterations: