Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 3°C. We apply continuously 136°C heat to the field 6x1
What is the temperature (rounded to whole numbers) in the field 5x1 after 77 iterations according to the Gauss-Seidel iteration

Field in the beginning

3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333

Field after 4 iterations (rounded after 4th iteration)

011313366840198
11272676211833513
1137214986552913
123614273931209
12348141917126
12235810974
1223456642
1222334432
1122222221
0111111110

Temperature in field 5x1 after 77 iterations: