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 155°C heat to the field 1x9
What is the temperature (rounded to whole numbers) in the field 7x0 after 135 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
13232933353635312412
13243034363736322413
15293536373736322412
24464641373533282111
4390644433282521158
6421378362216141184

Temperature in field 7x0 after 135 iterations: