Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 26°C. We apply continuously 136°C heat to the field 0x2
What is the temperature (rounded to whole numbers) in the field 7x5 after 84 iterations according to the Gauss-Seidel iteration

Field in the beginning

26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626
26262626262626262626

Field after 4 iterations (rounded after 4th iteration)

2020161311109863
6349342420171614105
18985483226222118137
6857433328252320158
3036343128262421168
1725282827262522169
1220232525252421168
915192122222119147
611141616171614105
3678998752

Temperature in field 7x5 after 84 iterations: