Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 36°C. We apply continuously 143°C heat to the field 0x0
What is the temperature (rounded to whole numbers) in the field 7x5 after 70 iterations according to the Gauss-Seidel iteration

Field in the beginning

36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636

Field after 4 iterations (rounded after 4th iteration)

1756430191513121184
6451372925232219147
30373532302928241810
19293233333231282111
15253033343433292212
13232932343433302312
12222831333333292211
11192428293029261910
814182122232219147
4710111212111073

Temperature in field 7x5 after 70 iterations: