Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 26°C. We apply continuously 132°C heat to the field 4x1
What is the temperature (rounded to whole numbers) in the field 0x9 after 91 iterations according to the Gauss-Seidel iteration

Field in the beginning

26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626

Field after 4 iterations (rounded after 4th iteration)

4819427447271694
7163687218944828168
8183564100724731199
9182944575040302010
9172533393833271910
9162227313129251810
916202426272623179
814182122232220147
610131516171614105
3578998753

Temperature in field 0x9 after 91 iterations: