Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 15°C. We apply continuously 79°C heat to the field 0x2
What is the temperature (rounded to whole numbers) in the field 6x1 after 70 iterations according to the Gauss-Seidel iteration

Field in the beginning

15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515

Field after 4 iterations (rounded after 4th iteration)

111297665532
3729191411109863
1104928191513121084
403325191615131295
182120181615141295
1015161616151413105
71113141514141295
5911121313121184
46899109863
2345555431

Temperature in field 6x1 after 70 iterations: