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 183°C heat to the field 7x1
What is the temperature (rounded to whole numbers) in the field 2x4 after 103 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)

4688122555995825
6101315224811629511845
81316192645831308338
8141821263755685227
9151922263139423419
9152023252831312514
9151922242527252011
814172021222220158
610131516171614115
3578898753

Temperature in field 2x4 after 103 iterations: