GUMMED FIIM COMPARISONS or 2 AE 8 Oo WT WL I~ (Cumlative 2c/mi*) Ratio LaGuardia Soil 13.0 26.0 13.0 HASL Pot Wy .9 25.9 11.0 3.8 903 55 6.5 16.2 907 , Gummned Filn 2.6 Gummed Film Pittsburgh Rain Gummed Film Notes 206 709 8.5 Gummed filmvalues not corrected for efficiency. a « a 563 $09 245 . 2.0 1.65