Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 29°C. We apply continuously 187°C heat to the field 2x1
What is the temperature (rounded to whole numbers) in the field 3x7 after 61 iterations according to the Gauss-Seidel iteration

Field in the beginning

29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929

Field after 4 iterations (rounded after 4th iteration)

1954101643621151174
3711330212864372519136
32781339461413123168
2349706350393226189
16324444403531261910
13243234343230261910
1120262930292825189
916212425252421168
712151718191816116
368910109863

Temperature in field 3x7 after 61 iterations: