remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 bigben.cac.wash .USNO.           1 u   21   64    3   76.078  1893888   9.331
 20six.fr        172.20.20.41     3 u   17   64    3  258.260  1893888   8.220
 216-9-0-66.lan. 132.239.1.6      2 u   19   64    3   79.943  1893888   7.987
*GPS_NMEA(1)     .GPS.            0 l   15   16   76    0.000   -4.334  29.159
 LOCAL(0)        LOCAL(0)        13 l   14   64    3    0.000    0.000   0.004