Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 25°C. We apply continuously 151°C heat to the field 7x9
What is the temperature (rounded to whole numbers) in the field 8x4 after 107 iterations according to the Gauss-Seidel iteration

Field in the beginning

25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525

Field after 4 iterations (rounded after 4th iteration)

3678888863
610121415151513105
712161819191917137
814182021212119147
815192122232220158
815192123232321169
8151921222325262111
8131719202434433216
6101314182954885323
35781327722087123

Temperature in field 8x4 after 107 iterations: