Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 36°C. We apply continuously 111°C heat to the field 2x8
What is the temperature (rounded to whole numbers) in the field 9x0 after 136 iterations according to the Gauss-Seidel iteration

Field in the beginning

36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636
36363636363636363636

Field after 4 iterations (rounded after 4th iteration)

5810111212121184
814182021212119147
1018232527272724189
11202528303130272111
12212731323332292212
12233235363534302312
15324746413835302211
21518666493933282010
26751898750342721157
163968462920151184

Temperature in field 9x0 after 136 iterations: