Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 19°C. We apply continuously 134°C heat to the field 7x3
What is the temperature (rounded to whole numbers) in the field 4x7 after 102 iterations according to the Gauss-Seidel iteration

Field in the beginning

19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919
19191919191919191919

Field after 4 iterations (rounded after 4th iteration)

34566681195
48911111424342613
591213162753885626
61113162140912249337
6111417223664996430
6111417212942524021
6111416192329312514
610131516182121169
47101112131413105
2456677653

Temperature in field 4x7 after 102 iterations: