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 113°C heat to the field 4x2
What is the temperature (rounded to whole numbers) in the field 3x8 after 64 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)

23614231812852
3717397046271694
4102872185793921125
411244980563521136
410183041352619126
49142024242015115
4811141717161395
479111213121074
3568898753
1334444431

Temperature in field 3x8 after 64 iterations: