baseProperties          Hantush equation base properties
baseProps_ex1           USGS verification example: base
                        parameterisation
compareModelResults     USGS verification example: compare R results
                        for water level increase with other models and
                        calculate statistical goodness of fit values
                        (e.g. RMSE, PBIAS, NSE)
erf                     Error function
example1                USGS verification example: model
                        parameterisation (multiple distances)
getModelComparisonTable
                        USGS verification example: get model comparison
                        table
hantush                 Hantush equation
hantushDistances        Hantush distance: for multiple coordinates
hantushDistancesBaseProps
                        Hantush distances & base properties: allows
                        input of vector of x,y coordinates and also a
                        vector for one of the base properties
hantushS                Helper function hantushS
hantushSstar            Hantush function Sstar
plotModelComparison     USGS verification example: plot model
                        comparison results
