Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 14°C. We apply continuously 140°C heat to the field 7x4
What is the temperature (rounded to whole numbers) in the field 1x4 after 143 iterations according to the Gauss-Seidel iteration

Field in the beginning

14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414

Field after 4 iterations (rounded after 4th iteration)

2344555542
3678881013116
47910101424352714
481011142553895726
5810121838912309537
581113183362996430
581012162438493820
47911131723272212
36789111415127
2344567753

Temperature in field 1x4 after 143 iterations: