FIG. 3. Cumulative probability density of the ratio of leaching concentrations for the lysimeter divided by leaching concentrations for the field. Ratios are for 80th percentiles of a series of 20 2- or 3-yr average flux concentrations for application every 2 or 3 yr, respectively, and for average flux concentration over 40 and 60 yr for application every 2 or 3 yr, respectively. The probability density was based on 200 hypothetical pesticides with randomly generated organic-matter/water distribution coefficient, K_OM, values between 0 and 100 L kg^–1 and DegT50 values between 1 and 100 d, but results were included only if the 80th percentile concentration of the pesticide was above 0.1 µg L^–1.