Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 30°C. We apply continuously 86°C heat to the field 6x1
What is the temperature (rounded to whole numbers) in the field 5x6 after 50 iterations according to the Gauss-Seidel iteration

Field in the beginning

30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030

Field after 4 iterations (rounded after 4th iteration)

4791117325334198
71215203365150673314
9151924345375543315
10172126324148412814
10172226303537332513
10182326293132292212
10172226282929262010
916202324252522178
712151718191916126
4689101010863

Temperature in field 5x6 after 50 iterations: