Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 25°C. We apply continuously 98°C heat to the field 4x6
What is the temperature (rounded to whole numbers) in the field 2x1 after 121 iterations according to the Gauss-Seidel iteration

Field in the beginning

25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525
25252525252525252525

Field after 4 iterations (rounded after 4th iteration)

3678888863
610121415151513105
712161819191917137
814182125252320158
815213040373124179
8162850785841291910
91836761768449322010
817305381604229189
612213241372821136
3610151817141173

Temperature in field 2x1 after 121 iterations: