Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 27°C. We apply continuously 139°C heat to the field 5x6
What is the temperature (rounded to whole numbers) in the field 4x4 after 130 iterations according to the Gauss-Seidel iteration

Field in the beginning

27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727

Field after 4 iterations (rounded after 4th iteration)

4689999863
611131516161614116
813171920212119147
915192125292824179
9162026375044332211
91623366510474482914
9162648102242111593315
81523407110978492913
6111727415446332110
3691319232116105

Temperature in field 4x4 after 130 iterations: