anchor.diff:  Trimble Navigation Ltd.,TRIMBLE NETRS,4435237680,UTK4,2013-05-23T04:30:00Z,2016-08-30T20:00:00Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237682,RGTA,2007-11-22T00:40:00Z,2018-05-27T23:35:01Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237684,WANG,2007-01-18T21:00:00Z,2007-07-17T23:20:00Z
  -Trimble Navigation Ltd.,TRIMBLE NETRS,4435237686,DNVK,2006-01-26T23:39:18Z,2006-01-31T01:00:25Z
  +Trimble Navigation Ltd.,TRIMBLE NETRS,4435237686,DNVK,2006-01-26T23:39:19Z,2006-01-31T01:00:25Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237686,TINT,2006-04-05T05:00:00Z,2007-04-19T02:00:00Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237686,MAHI,2008-01-20T04:59:59Z,2017-10-26T00:57:12Z
  -Trimble Navigation Ltd.,TRIMBLE NETRS,4435237687,TGOH,2006-05-22T03:35:49Z,2006-12-06T21:10:00Z
  +Trimble Navigation Ltd.,TRIMBLE NETRS,4435237687,TGOH,2006-05-22T03:35:49Z,2006-12-06T21:00:00Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237687,MAHO,2007-01-13T02:00:00Z,2007-01-14T02:00:00Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237687,RGLI,2007-05-30T03:25:00Z,2013-05-08T00:00:01Z
   Trimble Navigation Ltd.,TRIMBLE NETRS,4435237688,TGWH,2007-02-06T22:30:00Z,2007-06-20T01:50:00Z
  
positive.code: Leica Geosystems,LEICA CRS1000,23181,DUNT,1999-09-23T00:00:03Z,2000-08-01T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23181,DUNT,2000-08-14T00:00:01Z,2002-04-05T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23183,WGTT,2000-05-31T00:00:01Z,2006-08-24T01:20:00Z
  Leica Geosystems,LEICA CRS1000,23199,LYTT,1999-11-15T00:00:03Z,2003-11-24T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23204,WGTT,1999-12-14T00:00:00Z,1999-12-20T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23242,WGTT,1999-12-20T00:00:01Z,2000-01-06T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23243,WGTT,2000-01-06T00:00:01Z,2000-05-31T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23243,DUNT,2000-08-01T00:00:01Z,2000-08-14T00:00:00Z
  Leica Geosystems,LEICA CRS1000,23243,TAKL,2001-07-11T00:00:00Z,2007-07-05T03:44:00Z
  Leica Geosystems,LEICA CRS1000,30188,DUNT,2002-04-05T00:00:02Z,2007-06-06T00:00:00Z
  Leica Geosystems,LEICA GRX1200GGPRO,353205,LYTT,2007-09-26T00:00:01Z,9999-01-01T00:00:00Z
  Leica Geosystems,LEICA GRX1200GGPRO,463475,DUNT,2007-06-06T00:00:00Z,9999-01-01T00:00:00Z
  Leica Geosystems,LEICA RS500,82242,LYTT,2003-11-24T00:00:00Z,2007-09-26T00:00:00Z
  
negative.code: Trimble Navigation Ltd.,TRIMBLE NETRS,4429236335,NPLY,2006-04-02T20:17:36Z,2010-11-24T00:45:00Z
  Trimble Navigation Ltd.,TRIMBLE NETRS,4429236335,HORN,2012-08-31T10:00:00Z,2019-09-18T01:42:58Z
  Trimble Navigation Ltd.,TRIMBLE NETRS,4429236336,MANG,2005-02-11T00:55:13Z,2008-02-04T04:00:00Z
  Trimble Navigation Ltd.,TRIMBLE NETRS,4429236339,BLUF,2005-11-06T00:00:01Z,2006-10-18T22:25:00Z
  Trimble Navigation Ltd.,TRIMBLE NETRS,4429236339,LEYL,2007-03-27T05:55:00Z,2010-08-03T00:00:00Z
  Trimble Navigation Ltd.,TRIMBLE NETRS,4429236341,VGMT,2005-02-01T00:00:00Z,2011-01-17T01:26:00Z
  Trimble Navigation Ltd.,TRIMBLE NETRS,4429236341,BNET,2012-09-01T00:01:00Z,2015-07-30T00:59:59Z
  