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 187°C heat to the field 7x5
What is the temperature (rounded to whole numbers) in the field 6x2 after 117 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)

1233333321
2456666653
3567781014127
367881326413216
36781227641137132
3689174311430012147
36791635751247937
3578132442574423
245691422272313
1233471011106

Temperature in field 6x2 after 117 iterations: