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 78°C heat to the field 0x3
What is the temperature (rounded to whole numbers) in the field 9x6 after 100 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)

71112121212121184
1823242322222119147
4341353129292724189
116614337343331282111
47464137363533292212
25343636363534302312
17273133343433292211
13212629303030261910
915192123232219147
4810111212111073

Temperature in field 9x6 after 100 iterations: