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 69°C heat to the field 0x2
What is the temperature (rounded to whole numbers) in the field 4x5 after 85 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)

101197665532
3226181311109863
964425181413121084
353023181614131295
162019171615141295
91415161515141395
71113141414141295
5911121313121184
46899109863
2345555431

Temperature in field 4x5 after 85 iterations: