Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 40°C. We apply continuously 161°C heat to the field 7x4
What is the temperature (rounded to whole numbers) in the field 7x1 after 134 iterations according to the Gauss-Seidel iteration

Field in the beginning

40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040

Field after 4 iterations (rounded after 4th iteration)

69121313141313105
9162022232426272212
12202528303445564322
132228323650811217937
13233034426512728412350
142430354360931338842
13233034405065765830
12212731344046483820
9162023252830292312
58111213141514116

Temperature in field 7x1 after 134 iterations: