Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 31°C. We apply continuously 145°C heat to the field 3x6
What is the temperature (rounded to whole numbers) in the field 2x3 after 89 iterations according to the Gauss-Seidel iteration

Field in the beginning

31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131
31313131313131313131

Field after 4 iterations (rounded after 4th iteration)

47910101110974
712151718181816126
915192224242321168
1017243031302824189
10213752484034282010
133266108795541312211
16441052531186845332211
153772114835741302010
1024425650393022157
51219242320151184

Temperature in field 2x3 after 89 iterations: