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 121°C heat to the field 2x1
What is the temperature (rounded to whole numbers) in the field 1x9 after 64 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)

1540724830211613105
29822069454372923179
27619976554336292111
21436057504338332412
18334446454239342513
16283741414139342613
14253337383937332513
12222832333433292111
916212325252521158
5811121313131184

Temperature in field 1x9 after 64 iterations: