Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 23°C. We apply continuously 148°C heat to the field 6x5
What is the temperature (rounded to whole numbers) in the field 2x1 after 135 iterations according to the Gauss-Seidel iteration

Field in the beginning

23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323
23232323232323232323

Field after 4 iterations (rounded after 4th iteration)

3577888753
59111313141413105
711141617202321158
7131618233446382512
81317223564104714119
8141826481052531115423
81318254173113784621
7121621314659493216
591215202732282010
35681013141395

Temperature in field 2x1 after 135 iterations: