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 81°C heat to the field 2x5
What is the temperature (rounded to whole numbers) in the field 4x1 after 132 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)

2445555532
4689999863
4913141312121084
71625231916141295
1232574128211713105
19541386336241814105
1537624531231814105
102232292319151294
6131717151311963
3688876532

Temperature in field 4x1 after 132 iterations: