anchor.diff:  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72203,4.85,2015-07-30T17:25:01Z,2016-05-17T17:32:33Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72203,5.10,2016-05-17T17:32:34Z,2016-08-21T23:23:47Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72203,5.14,2016-08-21T23:23:48Z,2016-12-20T21:29:11Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72203,5.15,2016-12-20T21:29:12Z,9999-01-01T00:00:00Z,
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72203,5.15,2016-12-20T21:29:12Z,2018-01-10T06:04:59Z,
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72203,5.22,2018-01-10T06:05:00Z,9999-01-01T00:00:00Z,enable GPS-L5
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,4.17,2011-01-14T00:00:00Z,2012-10-31T23:50:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,4.46,2012-10-31T23:52:00Z,2015-08-18T16:25:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,4.85,2015-08-18T16:25:01Z,2016-05-17T19:30:28Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,5.10,2016-05-17T19:30:29Z,2016-09-17T20:29:33Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,5.14,2016-09-17T20:29:34Z,2016-12-20T22:59:53Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,5.15,2016-12-20T22:59:54Z,9999-01-01T00:00:00Z,
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,5.15,2016-12-20T22:59:54Z,2018-01-10T09:07:09Z,
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72209,5.22,2018-01-10T09:07:10Z,9999-01-01T00:00:00Z,enable GPS-L5
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72215,4.17,2011-03-30T00:00:00Z,2016-04-20T01:24:41Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72215,5.10,2016-04-20T01:24:42Z,2016-08-21T02:14:50Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72215,5.14,2016-08-21T02:14:51Z,2016-12-20T12:24:32Z,
  
positive.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72143,4.85,2015-09-20T15:25:01Z,2016-04-12T18:10:47Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72143,5.10,2016-04-12T18:10:48Z,2016-09-17T19:26:12Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72143,5.14,2016-09-17T19:26:13Z,2016-12-19T03:21:37Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72143,5.15,2016-12-19T03:21:38Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72152,4.17,2011-03-30T00:00:00Z,2013-12-28T23:59:59Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72152,4.46,2013-12-29T00:00:00Z,2014-05-11T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5049K72152,4.81,2014-05-11T00:00:01Z,2016-04-28T00:07:39Z,
  
negative.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50023,4.93,2015-07-23T12:00:00Z,2016-01-10T21:00:44Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50023,5.10,2016-01-10T21:00:45Z,2016-09-17T20:35:25Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50023,5.14,2016-09-17T20:35:26Z,2016-12-20T23:11:48Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50023,5.15,2016-12-20T23:11:49Z,2018-01-10T09:14:06Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50023,5.22,2018-01-10T09:14:07Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50025,4.93,2015-07-23T00:00:00Z,2016-02-29T23:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50025,4.85,2016-02-29T23:00:01Z,2016-03-02T23:12:01Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50025,5.10,2016-03-02T23:12:02Z,2016-10-14T00:37:07Z,
  