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 61°C heat to the field 1x1
What is the temperature (rounded to whole numbers) in the field 6x1 after 149 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)

1736251712109863
36103492922181614105
2549403126232118137
1729312926252320158
1222262626252421168
1018232525252522169
916212324252421168
814182021222119147
610131516161614105
3578898752

Temperature in field 6x1 after 149 iterations: