_file(date + pd.Timedelta(s, unit=&#34;d&#34;)) for s in steps])
        return list(fnames)

    def get_coordinates(self, stations, height):
        locations = []
        for station in stations:
            lat, lon = self.locations[station]
            locations.append([lat, lon, height])
        return locations

    @staticmethod
    def get_hydate(date):
        year = str(date)[2:4]
        month = str(date)[5:7]
        day = str(date)[8:10]
        hour = str(date)[11:13]
        start = year + &