Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 20°C. We apply continuously 160°C heat to the field 1x0
What is the temperature (rounded to whole numbers) in the field 3x5 after 56 iterations according to the Gauss-Seidel iteration

Field in the beginning

20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020

Field after 4 iterations (rounded after 4th iteration)

64216763116108752
439059362317141184
2544403124201714115
1526282623211916126
1018222221201917127
815182020201917137
713161819191916126
611141617171614115
5810121213121184
2456676542

Temperature in field 3x5 after 56 iterations: