Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 3°C. We apply continuously 167°C heat to the field 8x6
What is the temperature (rounded to whole numbers) in the field 1x1 after 61 iterations according to the Gauss-Seidel iteration

Field in the beginning

3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333
3333333333

Field after 4 iterations (rounded after 4th iteration)

0111111110
1112222211
1122222222
1222333586
1223337183120
12233519519449
122339339625989
122239266010154
11222615314226
0111137131611

Temperature in field 1x1 after 61 iterations: