code: def get_field_names(self):
          
          field_names = super(StationDataIO, self).get_field_names()
          if set(field_names) == set(['meta', 'data']):
              meta_fields = list(self.data[0]['meta'].keys())
              if set(meta_fields) < set(self.getvalue('meta')):
                  meta_fields = self.getvalue('meta')
              field_names = list(meta_fields) + ['data']
          return field_names
docs: ACIS web service returns "meta" and "data" for each station;
          Use meta attributes as field names