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 9x8
What is the temperature (rounded to whole numbers) in the field 5x8 after 115 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)

47910101010974
712151717181716126
915192122232220158
1017212425262523179
10172225272727241810
10182326272828252013
10172225272827272622
9162023242526304048
71215171819223158133
4689101012182940

Temperature in field 5x8 after 115 iterations: