code: def get_traffic_meter(self):
          
          _LOGGER.info("Get traffic meter")
  
          def parse_text(text):
              """
                  there are three kinds of values in the returned data
                  This function parses the different values and returns
                  (total, avg), timedelta or a plain float
              """
              def tofloats(lst): return (float(t) for t in lst)
              try:
                  if "/" in text:  # "6.19/0.88" total/avg
                      return tuple(tofloats(text.split('/')))
                  elif ":" in text:  # 11:14 hr:mn
                      hour, mins = tofloats(text.split(':'))
                      return timedelta(hours=hour, minutes=mins)
                  else:
                      return float(text)
              except ValueError:
                  return None
  
          success, response = self._make_request(SERVICE_DEVICE_CONFIG,
                                                 "GetTrafficMeterStatistics")
          if not success:
              return None
  
          success, node = _find_node(
              response.text,
              ".//GetTrafficMeterStatisticsResponse")
          if not success:
              return None
  
          return {t.tag: parse_text(t.text) for t in node}
docs: Return dict of traffic meter stats.
  
          Returns None if error occurred.