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 148°C heat to the field 2x0
What is the temperature (rounded to whole numbers) in the field 8x0 after 65 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)

2269206753419141184
2355946441292318137
1838544839322723179
15283738363229251810
13233033333230261910
11202730313130262010
11192428293029261910
917212426262622168
712161819201916126
4689101010863

Temperature in field 8x0 after 65 iterations: