Return flood growth curve function based on `amax_records` from the subject catchment only.

        :return: Inverse cumulative distribution function with one parameter `aep` (annual exceedance probability)
        :type: :class:`.GrowthCurve`

def _growth_curve_single_site(self, distr='glo'):
        """
        Return flood growth curve function based on `amax_records` from the subject catchment only.

        :return: Inverse cumulative distribution function with one parameter `aep` (annual exceedance probability)
        :type: :class:`.GrowthCurve`
        """
        if self.catchment.amax_records:
            self.donor_catchments = []
            return GrowthCurve(distr, *self._var_and_skew(self.catchment))
        else:
            raise InsufficientDataError("Catchment's `amax_records` must be set for a single site analysis.")