Compute the empty cells. Consider PTN conditions (For SO2, NO, NO2, and C5H8 express the mass concentration in Kg S m-3, Kg N m-3, Kg C m-3, respectively).
Gas/Unit
mg m-3 molecules ppm ppb cm-3 %
O3 180
SO2 4.0 x 1015
NO 60
NO2 10
NOx
CO 30
C5H8 6