Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 39°C. We apply continuously 165°C heat to the field 3x8
What is the temperature (rounded to whole numbers) in the field 6x9 after 104 iterations according to the Gauss-Seidel iteration

Field in the beginning

39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939

Field after 4 iterations (rounded after 4th iteration)

5911121313131295
915192223232320158
11192527293029262010
12222731333333302212
13232933363635322413
13233240424138332513
13274563584942352513
143674122896145342311
1544110276122664128189
1027589965392416105

Temperature in field 6x9 after 104 iterations: