Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 38°C. We apply continuously 116°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 2x8 after 73 iterations according to the Gauss-Seidel iteration

Field in the beginning

38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838
38383838383838383838

Field after 4 iterations (rounded after 4th iteration)

5911121313131194
915192122232220158
11192427282928251910
12212730323332292211
13222832343534312312
13232934394038332513
13223143555144362513
11223762957251372412
9204085202935232209
512234574493019115

Temperature in field 2x8 after 73 iterations: