Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 34°C. We apply continuously 157°C heat to the field 8x4
What is the temperature (rounded to whole numbers) in the field 3x7 after 35 iterations according to the Gauss-Seidel iteration

Field in the beginning

34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434
34343434343434343434

Field after 4 iterations (rounded after 4th iteration)

5810111112111085
8141719202020202012
10172124252629384527
111924272832447110656
1120252831375911526294
122026293238538311561
11202529313544556035
10182326283034373520
8131719212224242011
479101112121195

Temperature in field 3x7 after 35 iterations: