Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 12°C. We apply continuously 200°C heat to the field 2x4
What is the temperature (rounded to whole numbers) in the field 6x4 after 53 iterations according to the Gauss-Seidel iteration

Field in the beginning

12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212

Field after 4 iterations (rounded after 4th iteration)

2345554431
38141412108753
82544372518131073
2265121804627181284
371193211356535211495
29771349154332115105
184263533827191495
112332312520151284
6121617151311863
3578765431

Temperature in field 6x4 after 53 iterations: