Convert the Test Case to use
CAPTEX Meteorological Data

83 09 25 17

   start time


   run duration

39.90 -84.22 10.0



   data file

If one particle (mass = 1/2500) were contained in a grid cell of volume 5x5x1 km (2.5E+10 m3), then the air concentration would be about 10-14 units m-3, comparable to the lower end of the range shown above. A short particle residence times, a fraction of 12 h, would show even lower concentration values.