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 98°C heat to the field 3x5
What is the temperature (rounded to whole numbers) in the field 9x5 after 131 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
4679999863
4711141514121184
51120292621171395
718406848312216115
9276716675402618126
922467453352417116
716283833262015105
51016202017141173
2579987542

Temperature in field 9x5 after 131 iterations: