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 178°C heat to the field 8x0
What is the temperature (rounded to whole numbers) in the field 2x6 after 99 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)

3566712298124072
581011131832619950
6101314161928404829
6111416171924282817
7121517181921221911
712151718192019169
712151718191917137
610131516171615116
5810111213121184
2456676542

Temperature in field 2x6 after 99 iterations: