anchor.diff:  Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84097,5.10,2016-04-11T02:56:20Z,2016-08-21T02:03:07Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84097,5.14,2016-08-21T02:03:08Z,2016-12-20T12:12:46Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84097,5.15,2016-12-20T12:12:47Z,2017-06-20T13:23:11Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84097,5.22,2017-06-20T13:23:12Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84097,5.22,2017-06-20T13:23:12Z,2020-09-01T03:36:14Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84097,5.45,2020-09-01T03:36:15Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84098,4.43,2012-06-20T00:00:00Z,2013-12-16T03:29:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84098,4.46,2013-12-16T03:30:00Z,2016-03-14T00:25:55Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5215K84098,5.10,2016-03-14T00:25:56Z,2016-08-21T07:02:53Z,
  
positive.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41887,5.10,2016-05-09T02:16:03Z,2016-08-21T01:47:14Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41887,5.14,2016-08-21T01:47:15Z,2016-12-20T11:55:25Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41887,5.15,2016-12-20T11:55:26Z,2017-06-20T13:05:25Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41887,5.22,2017-06-20T13:05:26Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K50881,4.81,2014-05-07T00:00:00Z,2016-07-18T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K50881,5.10,2016-07-18T00:00:01Z,2016-08-15T04:04:05Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K50881,5.14,2016-08-15T04:04:06Z,2016-12-20T01:17:23Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K50881,5.15,2016-12-20T01:17:24Z,2017-06-19T22:00:34Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5306K50881,5.22,2017-06-19T22:00:35Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5307K50971,4.81,2014-05-07T00:00:00Z,2014-12-16T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5307K50971,4.82,2014-12-16T00:00:01Z,2015-08-31T20:40:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5307K50971,4.85,2015-08-31T20:40:01Z,2016-03-30T03:14:14Z,
  
negative.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50049,5.10,2016-04-03T23:33:28Z,2016-08-20T23:13:37Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50049,5.14,2016-08-20T23:13:38Z,2016-12-20T10:15:03Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50049,5.15,2016-12-20T10:15:04Z,2017-06-20T08:53:38Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50049,5.22,2017-06-20T08:53:39Z,2020-08-24T21:50:25Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50049,5.45,2020-08-24T21:50:26Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50008,4.93,2015-07-23T00:00:00Z,2017-07-05T23:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50008,5.22,2017-07-05T23:00:01Z,2020-08-24T22:03:38Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50008,5.45,2020-08-24T22:03:39Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50011,4.93,2015-07-23T00:00:00Z,2018-05-15T00:04:30Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50011,5.10,2018-05-15T00:04:31Z,2018-05-15T03:41:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50011,5.22,2018-05-15T03:41:01Z,2020-08-24T22:16:10Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5503R50011,5.45,2020-08-24T22:16:11Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,4.93,2015-07-23T12:00:00Z,2015-07-24T12:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,4.85,2015-07-24T12:00:01Z,2016-05-04T23:04:41Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,5.10,2016-05-04T23:04:42Z,2016-08-05T03:32:07Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,5.14,2016-08-05T03:32:08Z,2016-12-19T21:11:12Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,5.15,2016-12-19T21:11:13Z,2017-06-19T03:16:23Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,5.22,2017-06-19T03:16:24Z,2020-08-24T22:30:41Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50165,5.45,2020-08-24T22:30:42Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50167,4.93,2015-07-23T00:00:00Z,2017-06-15T03:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50167,5.15,2017-06-15T03:00:01Z,2017-06-20T23:57:50Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50167,5.22,2017-06-20T23:57:51Z,2020-08-24T22:59:43Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50167,5.45,2020-08-24T22:59:44Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50170,4.93,2015-07-23T00:00:00Z,2015-07-23T00:00:01Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50170,4.85,2015-07-23T00:00:02Z,2016-11-15T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50170,5.14,2016-11-15T00:00:01Z,2017-11-30T22:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50170,5.22,2017-11-30T22:00:01Z,2020-08-24T23:13:34Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5504R50170,5.45,2020-08-24T23:13:35Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50001,4.93,2015-07-23T00:00:00Z,2016-08-18T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50001,5.14,2016-08-18T00:00:01Z,2016-12-20T00:49:56Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50001,5.15,2016-12-20T00:49:57Z,2017-06-19T05:42:12Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50001,5.22,2017-06-19T05:42:13Z,2020-08-24T23:27:46Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50001,5.45,2020-08-24T23:27:47Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50003,4.93,2015-07-23T00:00:00Z,2016-12-14T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50003,5.14,2016-12-14T00:00:01Z,2016-12-19T22:10:19Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50003,5.15,2016-12-19T22:10:20Z,2017-06-19T04:17:37Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50003,5.22,2017-06-19T04:17:38Z,2020-08-24T23:40:04Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50003,5.45,2020-08-24T23:40:05Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50016,4.93,2015-07-23T00:00:00Z,2016-11-15T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50016,5.14,2016-11-15T00:00:01Z,2016-12-20T18:13:15Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50016,5.15,2016-12-20T18:13:16Z,2017-06-19T04:50:52Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50016,5.22,2017-06-19T04:50:53Z,2020-08-24T23:51:57Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50016,5.45,2020-08-24T23:51:58Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50019,4.93,2015-07-23T00:00:00Z,2016-08-15T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50019,5.14,2016-08-15T00:00:01Z,2017-05-15T04:54:48Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50019,5.15,2017-05-15T04:54:49Z,2017-06-20T17:32:35Z,
  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 NETR9,5505R50023,4.93,2015-07-23T12:00:00Z,2016-01-10T21:00:44Z,
  