Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 40°C. We apply continuously 112°C heat to the field 9x4
What is the temperature (rounded to whole numbers) in the field 3x3 after 104 iterations according to the Gauss-Seidel iteration

Field in the beginning

40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040

Field after 4 iterations (rounded after 4th iteration)

6912131314131295
9162022232423211712
12202528303030293025
13222832343435405159
132330343637405180162
14243034363841475863
13233034363739414030
12212730323334332817
9162023242525231810
5811121313131195

Temperature in field 3x3 after 104 iterations: