code: def parse_xml_station(elem):
      
      stid = elem.attrib['id']
      name = elem.find('name').text
      lat = float(elem.find('latitude').text)
      lon = float(elem.find('longitude').text)
      elev = float(elem.find('elevation').text)
      return Station(id=stid, elevation=elev, latitude=lat, longitude=lon, name=name)
docs: Create a :class:`Station` instance from an XML tag.