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 137°C heat to the field 3x5
What is the temperature (rounded to whole numbers) in the field 6x8 after 131 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
712151819191816126
915222728272522168
10203549453832261910
123163103765340302111
16431012411146645332311
153771112835843322211
1327456055453628199
918273434302520147
4913161615131073

Temperature in field 6x8 after 131 iterations: