Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 30°C. We apply continuously 96°C heat to the field 1x3
What is the temperature (rounded to whole numbers) in the field 0x4 after 139 iterations according to the Gauss-Seidel iteration

Field in the beginning

30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030

Field after 4 iterations (rounded after 4th iteration)

6111212111110974
1529282421201816126
3368523830262421158
57164804937312724179
38756046373229251910
24424339353230261910
16283233323029251910
1220252627262522168
814171920201916126
47910101010863

Temperature in field 0x4 after 139 iterations: