Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 22°C. We apply continuously 91°C heat to the field 9x1
What is the temperature (rounded to whole numbers) in the field 1x6 after 83 iterations according to the Gauss-Seidel iteration

Field in the beginning

22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222
22222222222222222222

Field after 4 iterations (rounded after 4th iteration)

3567779142537
5911121313162653125
6111415161720263746
7121517181921232521
7131618202021211912
713171920212120169
713161920202018148
711151718181816126
5911131314131284
3467777642

Temperature in field 1x6 after 83 iterations: