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 118°C heat to the field 3x4
What is the temperature (rounded to whole numbers) in the field 8x0 after 150 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)

4689999863
610151920181714115
816284036292420147
1026538763443224179
13368620697563727199
13326196715037281910
1125415449403326189
919273434312722158
712182122211916115
36910111110863

Temperature in field 8x0 after 150 iterations: