Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 29°C. We apply continuously 145°C heat to the field 6x3
What is the temperature (rounded to whole numbers) in the field 8x1 after 142 iterations according to the Gauss-Seidel iteration

Field in the beginning

29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929

Field after 4 iterations (rounded after 4th iteration)

478910121514105
7121416203143352311
81418233564103704119
9162129501072511125524
101722304677116824923
10172328385366553819
10172226323944392915
9152023263031282111
711151719212119147
3689101010973

Temperature in field 8x1 after 142 iterations: