anchor.diff:  MQZG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2011-02-09T23:48:01Z,2015-08-18T17:25:00Z
   MQZG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-08-18T17:25:01Z,2016-06-27T17:14:09Z
   MQZG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2016-06-27T17:14:10Z,9999-01-01T00:00:00Z
  -MRBL,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,geonet,trimble_netr9 x4,2014-07-02T02:05:38Z,9999-01-01T00:00:00Z
  +MRBL,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,geonet,trimble_netr9 x4,2014-07-02T02:05:38Z,2016-09-12T01:00:00Z
  +MRBL,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2016-09-12T01:00:01Z,9999-01-01T00:00:00Z
   MTBL,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,geonet,trimble_5700 x4,2008-03-11T07:01:00Z,2015-07-24T01:05:57Z
   MTBL,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,geonet,trimble_netr9 x4,2015-07-24T01:05:59Z,9999-01-01T00:00:00Z
   MTJO,GeoNet,GNS,TRIMBLE 4000SSI,GPS,30s,4,sagenz,trimble_r x19,2000-08-15T00:00:00Z,2004-06-05T02:00:00Z
   MTJO,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,sagenz,trimble_5700 x4,2004-06-05T03:00:00Z,2011-02-07T22:33:00Z
   MTJO,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2011-02-08T00:00:01Z,2015-04-21T18:59:10Z
  -MTJO,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-04-21T18:59:11Z,2015-09-20T15:25:00Z
  -MTJO,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2015-09-20T15:25:01Z,9999-01-01T00:00:00Z
  +MTJO,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-04-21T18:59:11Z,2015-06-10T00:00:00Z
  +MTJO,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2015-06-10T00:00:01Z,9999-01-01T00:00:00Z
   MTPR,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,geonet,trimble_5700 x4,2010-01-27T01:21:01Z,2015-05-27T23:43:58Z
   MTPR,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,geonet,trimble_netr9 x4,2015-05-27T23:44:00Z,9999-01-01T00:00:00Z
   MTQN,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,geonet,trimble_5700 x4,2010-02-09T00:00:11Z,2016-06-07T00:30:00Z
  
positive.code: WGTT,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,geonet,trimble_5700 x4,2006-08-24T01:20:30Z,9999-01-01T00:00:00Z
  WHKT,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,geonet,trimble_5700 x4,2009-03-23T00:30:00Z,2011-01-27T00:15:00Z
  WHKT,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2011-01-27T02:14:00Z,2015-08-18T16:25:00Z
  WHKT,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-08-18T16:25:01Z,9999-01-01T00:00:00Z
  WHNG,GeoNet,GNS,TRIMBLE 5700,GPS,30s,4,linz,trimble_5700 x5,2003-04-02T23:59:00Z,2004-10-14T23:59:00Z
  WHNG,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,linz,trimble_5700 x4,2004-10-15T00:00:00Z,2010-11-22T21:00:00Z
  WHNG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2010-11-22T21:07:00Z,2015-08-13T16:25:00Z
  WHNG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-08-13T16:25:01Z,9999-01-01T00:00:00Z
  WHVR,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,geonet,trimble_netr9 x4,2011-09-30T00:15:57Z,2016-04-05T02:44:05Z
  WHVR,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,geonet,trimble_netr9 x4,2016-04-05T02:44:06Z,9999-01-01T00:00:00Z
  WITH,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,geonet,trimble_5700 x4,2009-11-10T00:05:01Z,2011-04-28T22:09:00Z
  
negative.code: WANG,GeoNet,GNS,TRIMBLE 5700,GPS,30s,4,linz,trimble_5700 x5,2003-04-17T23:59:00Z,2007-01-18T03:00:00Z
  WANG,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,linz,trimble_5700 x4,2007-01-18T21:00:00Z,2010-11-04T00:00:00Z
  WANG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,4,linz,trimble_netr9 x4,2010-11-04T00:01:01Z,2015-04-09T17:05:29Z
  WANG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-04-09T17:05:30Z,2016-07-26T17:04:00Z
  WANG,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2016-07-26T17:04:01Z,9999-01-01T00:00:00Z
  WARK,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,linz,trimble_5700 x4,2009-01-23T13:15:01Z,2011-01-11T00:00:00Z
  WARK,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2011-01-11T00:23:15Z,2013-03-20T23:13:00Z
  WARK,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,3,linz,trimble_netr9 x4,2013-03-20T23:13:01Z,2014-09-30T21:39:44Z
  WARK,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2014-09-30T21:39:45Z,9999-01-01T00:00:00Z
  WEST,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,linz,trimble_5700 x4,2004-09-23T05:00:00Z,2011-01-26T01:55:00Z
  WEST,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2011-01-26T03:03:01Z,2015-07-28T17:21:40Z
  WEST,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,0,linz,trimble_netr9 x4,2015-07-28T17:21:41Z,2016-07-26T17:04:30Z
  WEST,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO+GAL+BDS+QZSS,30s,0,linz,trimble_netr9 x4,2016-07-26T17:04:31Z,9999-01-01T00:00:00Z
  WGTN,GeoNet,GNS,ASHTECH Z-XII3,GPS,30s,4,linz,ashtech_r x6,1996-05-23T00:00:00Z,2005-03-21T01:59:59Z
  WGTN,GeoNet,GNS,TRIMBLE NETRS,GPS,30s,4,linz,trimble_5700 x4,2005-03-21T02:00:00Z,2010-11-14T22:26:00Z
  WGTN,GeoNet,GNS,TRIMBLE NETR9,GPS+GLO,30s,3,linz,trimble_netr9 x4,2010-11-14T22:35:01Z,2015-07-27T18:14:52Z
  