If you look at the x-axis of this graph, you'll see that what we commonly want to do -- which is keeping the outdoors out -- we accomplished that with mechanical ventilation.
Po ta shiqoni boshtin e grafit X ju do te shihni se shpesh her ne deshirojme -- te mbajme te jashtmein jasht -- ne arritem qe me sistemin mekanik te ventilllimit.