Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 7°C. We apply continuously 101°C heat to the field 2x1
What is the temperature (rounded to whole numbers) in the field 3x5 after 72 iterations according to the Gauss-Seidel iteration

Field in the beginning

7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777

Field after 4 iterations (rounded after 4th iteration)

92752321695321
18581596429159642
15386644261610742
9223227201410752
612171714119753
4811111098753
3678887652
2466776542
2344555431
1222222211

Temperature in field 3x5 after 72 iterations: