Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 25°C. We apply continuously 140°C heat to the field 0x6
What is the temperature (rounded to whole numbers) in the field 1x9 after 138 iterations according to the Gauss-Seidel iteration

Field in the beginning

25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525

Field after 4 iterations (rounded after 4th iteration)

3678888863
610121415151513105
813161819191917137
1218212222222119147
2631292625242320158
6855413228262421168
19589513629262421158
6957423226242219137
2831272320181614105
1014131211109752

Temperature in field 1x9 after 138 iterations: