def get_ntp_stats(self):
raise NotImplementedError<EOL>
Returns a list of NTP synchronization statistics.

    * remote (string)
    * referenceid (string)
    * synchronized (True/False)
    * stratum (int)
    * type (string)
    * when (string)
    * hostpoll (int)
    * reachability (int)
    * delay (float)
    * offset (float)
    * jitter (float)

Example::

    [
        {
            'remote'        : u'188.114.101.4',
            'referenceid'   : u'188.114.100.1',
            'synchronized'  : True,
            'stratum'       : 4,
            'type'          : u'-',
            'when'          : u'107',
            'hostpoll'      : 256,
            'reachability'  : 377,
            'delay'         : 164.228,
            'offset'        : -13.866,
            'jitter'        : 2.695
        }
    ]