Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 7°C. We apply continuously 118°C heat to the field 5x7
What is the temperature (rounded to whole numbers) in the field 1x6 after 147 iterations according to the Gauss-Seidel iteration

Field in the beginning

7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777

Field after 4 iterations (rounded after 4th iteration)

1222222221
2334444431
2345555542
2456666642
245681111963
24591828231694
2471741734827146
24927721907937187
2382045775128156
125112130231584

Temperature in field 1x6 after 147 iterations: