Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 28°C. We apply continuously 144°C heat to the field 2x5
What is the temperature (rounded to whole numbers) in the field 0x8 after 125 iterations according to the Gauss-Seidel iteration

Field in the beginning

28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828
28282828282828282828

Field after 4 iterations (rounded after 4th iteration)

47899109863
711141617171615116
816232524232219147
1229464235302622169
22581027451383125189
3497246114644333271910
28661108156413326199
1940575242342923168
1123313128242117126
5101415141311963

Temperature in field 0x8 after 125 iterations: