Input data: 
Variables and range 
lower 
upper 
Faecal coliform (FC) count 


Num pathogens per 10^{5} FC 


Water on 100g lettuce (ml) 


Reduction factor (n log) 


Exposure (each n days) 


Infected proportion 


Pathogen coefficients 


N_{50} 


Alpha 


Or Select one of the preset pathogen coefficients: 
Variation from table 


Raw N_{50} from table 

Raw Alpha from table 

Output parameters: 


Mid percentile 


Upper percentile 


Calculation control: 


Number of simulations 

