Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 1°C. We apply continuously 168°C heat to the field 0x6
What is the temperature (rounded to whole numbers) in the field 1x4 after 138 iterations according to the Gauss-Seidel iteration

Field in the beginning

1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111

Field after 4 iterations (rounded after 4th iteration)

0000000000
0001111100
1111111110
5643211110
2220137421110
71492714732110
225904018942110
75543116842110
27261811632110
91186321100

Temperature in field 1x4 after 138 iterations: