tfile = (
                self.outdir
                + self.met_type
                + &#34;.&#34;
                + str(self.height)
                + &#34;.&#34;
                + self.get_out_date(date)
            )
            if self.met_type == &#34;ncep_old&#34;:
                metfiles = self.get_old_ncep_metfiles(date)

            if self.met_type == &#34;ncep_new&#34;:
                metfiles = self.get_new_ncep_metfiles(date)

            if self.met_type == &#34;gdas_1&#34;:
               