Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 37°C. We apply continuously 89°C heat to the field 1x4
What is the temperature (rounded to whole numbers) in the field 9x5 after 89 iterations according to the Gauss-Seidel iteration

Field in the beginning

37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737
37373737373737373737

Field after 4 iterations (rounded after 4th iteration)

5911121313121184
1018222323232219158
18343633313028251910
34695745393533292111
571588255433835312312
38756351433936322412
25444643403835312312
17293435343331272010
1119232525252320147
5911131313121074

Temperature in field 9x5 after 89 iterations: