Reference

General utility functions Functions that are independent of specific fate modelling areas
geomean()	Calculate the geometric mean
one_box()	Create a time series of decline data
plot(<one_box>)	Plot time series of decline data
sawtooth()	Create decline time series for multiple applications
twa()	Calculate a time weighted average concentration
max_twa()	The maximum time weighted average concentration for a moving window
pfm_degradation()	Calculate a time course of relative concentrations based on an mkinmod model
SFO_actual_twa()	Actual and maximum moving window time average concentrations for SFO kinetics
FOMC_actual_twa()	Actual and maximum moving window time average concentrations for FOMC kinetics
Predicted environmental concentrations in soil
PEC_soil()	Calculate predicted environmental concentrations in soil
PEC_soil_mets()	Calculate initial and accumulation PEC soil for a set of metabolites
soil_scenario_data_EFSA_2015	Properties of the predefined scenarios from the EFSA guidance from 2015
soil_scenario_data_EFSA_2017	Properties of the predefined scenarios from the EFSA guidance from 2017
PEC_FOMC_accu_rel()	Get the relative accumulation of an FOMC model over multiples of an interval
Predicted environmental concentrations in groundwater
FOCUS_GW_scenarios_2012	A very small subset of the FOCUS Groundwater scenario definitions
Predicted environmental concentrations in surface water
PEC_sw_drift()	Calculate predicted environmental concentrations in surface water due to drift
drift_data_JKI	Deposition from spray drift expressed as percent of the applied dose as published by the JKI
PEC_sw_drainage_UK()	Calculate initial predicted environmental concentrations in surface water due to drainage using the UK method
PEC_sw_sed()	Calculate predicted environmental concentrations in sediment from surface water concentrations
chent_focus_sw()	Create a chemical compound object for FOCUS Step 1 calculations
PEC_sw_focus()	Calculate PEC surface water at FOCUS Step 1
FOCUS_Step_12_scenarios	Step 1/2 scenario data as distributed with the FOCUS Step 1/2 calculator
perc_runoff_exposit	Runoff loss percentages as used in Exposit 3
perc_runoff_reduction_exposit	Runoff reduction percentages as used in Exposit
PEC_sw_exposit_runoff()	Calculate PEC surface water due to runoff and erosion as in Exposit 3
TOXSWA_cwa	R6 class for holding TOXSWA water concentration data and associated statistics
read.TOXSWA_cwa()	Read TOXSWA surface water concentrations
plot(<TOXSWA_cwa>)	Plot TOXSWA surface water concentrations
Classifications and indicators Evaluating environmental fate properties
SSLRC_mobility_classification()	Determine the SSLRC mobility classification for a chemical substance from its Koc
GUS() print(<GUS_result>)	Groundwater ubiquity score based on Gustafson (1989)
Utilities
get_vertex()	Fit a parabola through three points