def on_delete_interpretation_button(self, event):
        """
        delete the current interpretation temporarily (not to a file)
        """

        del self.Data[self.s]['pars']
        self.Data[self.s]['pars'] = {}
        self.Data[self.s]['pars']['deleted'] = True
        self.Data[self.s]['pars']['lab_dc_field'] = self.Data[self.s]['lab_dc_field']
        self.Data[self.s]['pars']['er_specimen_name'] = self.Data[self.s]['er_specimen_name']
        self.Data[self.s]['pars']['er_sample_name'] = self.Data[self.s]['er_sample_name']
        self.Data[self.s]['pars']['er_sample_name'] = self.Data[self.s]['er_sample_name']
        sample = self.Data_hierarchy['specimens'][self.s]
        if sample in list(self.Data_samples.keys()):
            if self.s in list(self.Data_samples[sample].keys()):
                if 'B' in list(self.Data_samples[sample][self.s].keys()):
                    del self.Data_samples[sample][self.s]['B']

        site = thellier_gui_lib.get_site_from_hierarchy(
            sample, self.Data_hierarchy)
        if site in list(self.Data_sites.keys()):
            if self.s in list(self.Data_sites[site].keys()):
                del self.Data_sites[site][self.s]['B']
                # if 'B' in self.Data_sites[site][self.s].keys():
                #    del self.Data_sites[site][self.s]['B']

        self.tmin_box.SetValue("")
        self.tmax_box.SetValue("")
        self.clear_boxes()
        self.draw_figure(self.s)
        self.draw_sample_mean()
        self.write_sample_box()
        self.close_warning = True