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 146°C heat to the field 1x5
What is the temperature (rounded to whole numbers) in the field 1x4 after 58 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)

47910101110974
713161818191816126
1121252525242421168
2243423732292724189
47987452403430261910
8324311366463732272010
531058057433632271910
3053514336322824179
1628302926232117126
7121414131211963

Temperature in field 1x4 after 58 iterations: