Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 10°C. We apply continuously 155°C heat to the field 8x4
What is the temperature (rounded to whole numbers) in the field 8x6 after 131 iterations according to the Gauss-Seidel iteration

Field in the beginning

10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010

Field after 4 iterations (rounded after 4th iteration)

1233333332
24566668107
35677811223221
367881123539148
36781015379524585
3689101531629952
3678101322364527
357881015202214
245667911117
1233344553

Temperature in field 8x6 after 131 iterations: