Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 17°C. We apply continuously 164°C heat to the field 1x9
What is the temperature (rounded to whole numbers) in the field 7x2 after 39 iterations according to the Gauss-Seidel iteration

Field in the beginning

17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717

Field after 4 iterations (rounded after 4th iteration)

2455666542
4789101010973
5811121313131194
59121314151413105
610131415161514105
611141516161614116
816191817171614105
183632252017151395
408655322015121073
6422076311597532

Temperature in field 7x2 after 39 iterations: