Probit models Data - Collins et al. (2002) Fixed exposure time 48hr & Different concentrations Different mortalities Strain QRD14 (ss) Strain Comb F1 (hh)
Model - 2-parameter probit model Y=a+b log(Ct
Y - probit mortality, the inverse CDF (~N(0,1) ) value + 5 C – PH3 dose or concentration (mg/l) t - exposure time (hours)
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