anchor.diff:  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50019,5.22,2017-06-20T17:32:36Z,2020-09-01T03:52:10Z,enable GPS-L5
   Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50019,5.45,2020-09-01T03:52:11Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50021,4.93,2015-07-23T00:00:00Z,2018-01-30T23:16:26Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50021,5.22,2018-01-30T23:16:27Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50021,5.22,2018-01-30T23:16:27Z,2020-09-23T20:56:23Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50021,5.45,2020-09-23T20:56:24Z,9999-01-01T00:00:00Z,
   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,
  
positive.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50043,5.10,2016-08-23T01:00:01Z,2016-08-24T00:19:57Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50043,5.14,2016-08-24T00:19:58Z,2016-12-20T14:45:52Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50043,5.15,2016-12-20T14:45:53Z,2017-06-20T16:29:04Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50043,5.22,2017-06-20T16:29:05Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50044,4.93,2015-07-23T00:00:00Z,2016-08-17T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50044,5.10,2016-08-17T00:00:01Z,2016-08-20T00:04:48Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50044,5.14,2016-08-20T00:04:49Z,2016-12-20T13:08:33Z,
  
negative.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50096,4.93,2015-07-23T00:00:00Z,2016-08-23T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50096,5.14,2016-08-23T00:00:01Z,2016-12-19T22:19:33Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50096,5.15,2016-12-19T22:19:34Z,2017-06-26T03:25:45Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50096,5.22,2017-06-26T03:25:46Z,2020-09-23T21:23:41Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50096,5.45,2020-09-23T21:23:42Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50097,4.93,2015-07-23T00:00:00Z,2016-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50097,5.10,2016-01-01T00:00:01Z,2016-08-21T03:27:22Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5522R50097,5.14,2016-08-21T03:27:23Z,2016-12-20T14:10:50Z,
  