anchor.diff:  Trimble Navigation Ltd.,TRIMBLE NETR9,5301K56131,5.10,2016-04-27T22:21:50Z,2016-08-21T03:20:21Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5301K56131,5.14,2016-08-21T03:20:22Z,2016-12-20T14:04:35Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5301K56131,5.15,2016-12-20T14:04:36Z,2017-06-20T15:27:02Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5301K56131,5.22,2017-06-20T15:27:03Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5301K56131,5.22,2017-06-20T15:27:03Z,2020-08-20T04:00:40Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5301K56131,5.45,2020-08-20T04:00:41Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,default,2013-05-15T00:00:00Z,2014-10-14T21:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,4.85,2014-10-14T21:01:00Z,2016-05-08T23:09:36Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,5.10,2016-05-08T23:09:37Z,2016-08-16T04:49:54Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,5.14,2016-08-16T04:49:55Z,2016-12-20T04:27:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,5.15,2016-12-20T04:27:01Z,2017-06-20T00:47:06Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,5.22,2017-06-20T00:47:07Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,5.22,2017-06-20T00:47:07Z,2020-08-20T01:08:26Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5302K41648,5.45,2020-08-20T01:08:27Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,4.81,2014-05-07T00:00:00Z,2014-10-07T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,4.82,2014-10-07T00:00:01Z,2016-04-28T22:21:35Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,5.10,2016-04-28T22:21:36Z,2016-08-15T04:33:38Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,5.14,2016-08-15T04:33:39Z,2016-12-20T01:47:16Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,5.15,2016-12-20T01:47:17Z,2017-06-19T22:37:06Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,5.22,2017-06-19T22:37:07Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,5.22,2017-06-19T22:37:07Z,2020-08-20T01:21:13Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5304K50023,5.45,2020-08-20T01:21:14Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,default,2013-05-15T00:00:00Z,2014-01-28T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,4.62,2014-01-28T00:00:01Z,2016-04-22T02:05:42Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,5.10,2016-04-22T02:05:43Z,2016-08-21T02:09:19Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,5.14,2016-08-21T02:09:20Z,2016-12-20T12:19:16Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,5.15,2016-12-20T12:19:17Z,2017-06-20T13:29:22Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,5.22,2017-06-20T13:29:23Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,5.22,2017-06-20T13:29:23Z,2020-08-20T01:38:39Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41807,5.45,2020-08-20T01:38:40Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,default,2013-05-15T00:00:00Z,2013-05-15T01:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,4.62,2013-05-15T01:00:01Z,2014-10-01T00:28:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,4.85,2014-10-01T00:29:00Z,2016-05-09T00:11:24Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,5.10,2016-05-09T00:11:25Z,2016-08-16T05:05:31Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,5.14,2016-08-16T05:05:32Z,2016-12-20T04:44:13Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,5.15,2016-12-20T04:44:14Z,2017-06-20T01:04:02Z,
  -Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,5.22,2017-06-20T01:04:03Z,9999-01-01T00:00:00Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,5.22,2017-06-20T01:04:03Z,2020-08-20T02:04:02Z,enable GPS-L5
  +Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41857,5.45,2020-08-20T02:04:03Z,9999-01-01T00:00:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41861,default,2013-05-15T00:00:00Z,2013-05-15T00:01:00Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41861,4.62,2013-05-15T00:01:01Z,2016-04-05T01:07:03Z,
   Trimble Navigation Ltd.,TRIMBLE NETR9,5306K41861,4.85,2016-04-05T01:07:04Z,2016-05-15T22:49:09Z,
  
positive.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50032,5.10,2016-01-13T00:00:01Z,2016-08-15T05:39:57Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50032,5.14,2016-08-15T05:39:58Z,2016-12-20T03:05:45Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50032,5.15,2016-12-20T03:05:46Z,2017-06-19T23:32:17Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50032,5.22,2017-06-19T23:32:18Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50033,4.93,2015-07-23T00:00:00Z,2016-03-21T22:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50033,5.10,2016-03-21T22:00:01Z,2016-08-05T03:44:16Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50033,5.14,2016-08-05T03:44:17Z,2016-12-19T21:21:47Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50033,5.15,2016-12-19T21:21:48Z,2017-06-19T03:27:31Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50033,5.22,2017-06-19T03:27:32Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50034,4.93,2015-07-23T00:00:00Z,2018-01-24T01:50:59Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50034,5.22,2018-01-24T01:51:00Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50036,4.93,2015-07-23T00:00:00Z,2016-01-04T20:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50036,5.10,2016-01-04T20:00:01Z,2016-08-21T03:53:48Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50036,5.14,2016-08-21T03:53:49Z,2016-12-20T14:35:09Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50036,5.15,2016-12-20T14:35:10Z,2017-06-20T16:07:21Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50036,5.22,2017-06-20T16:07:22Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50037,4.93,2015-07-23T00:00:00Z,2017-07-17T23:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50037,5.22,2017-07-17T23:00:01Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50038,4.93,2015-07-23T00:00:00Z,2017-03-24T01:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50038,5.15,2017-03-24T01:00:01Z,2017-06-20T12:17:08Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50038,5.22,2017-06-20T12:17:09Z,9999-01-01T00:00:00Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50142,4.93,2015-07-23T00:00:00Z,2015-12-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50142,4.85,2015-12-01T00:00:01Z,2016-04-03T23:08:31Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5505R50142,5.10,2016-04-03T23:08:32Z,2016-08-21T02:25:40Z,
  
negative.code: Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42011,5.10,2016-04-27T00:50:47Z,2016-08-16T05:17:44Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42011,5.14,2016-08-16T05:17:45Z,2016-12-20T05:33:58Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42011,5.15,2016-12-20T05:33:59Z,2017-06-20T01:36:02Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42011,5.22,2017-06-20T01:36:03Z,2020-08-20T03:00:38Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42011,5.45,2020-08-20T03:00:39Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,default,2013-05-15T00:00:00Z,2014-02-24T23:59:59Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,4.62,2014-02-25T00:00:00Z,2016-04-27T23:13:44Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,5.10,2016-04-27T23:13:45Z,2016-08-21T03:48:09Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,5.14,2016-08-21T03:48:10Z,2016-12-20T14:29:53Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,5.15,2016-12-20T14:29:54Z,2017-06-20T16:01:58Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,5.22,2017-06-20T16:01:59Z,2020-08-20T03:13:33Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5308K42013,5.45,2020-08-20T03:13:34Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,4.81,2015-04-01T00:00:00Z,2015-07-23T01:31:30Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,4.85,2015-07-23T01:31:36Z,2016-05-05T22:23:36Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,5.10,2016-05-05T22:23:37Z,2016-08-14T19:25:26Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,5.14,2016-08-14T19:25:27Z,2016-12-19T22:53:44Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,5.15,2016-12-19T22:53:45Z,2017-06-19T05:02:49Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,5.22,2017-06-19T05:02:50Z,2020-08-20T03:27:40Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50018,5.45,2020-08-20T03:27:41Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,4.81,2015-04-01T00:00:00Z,2015-07-24T01:05:57Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,4.85,2015-07-24T01:05:59Z,2016-05-08T21:36:47Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,5.10,2016-05-08T21:36:48Z,2016-07-24T23:04:23Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,5.14,2016-07-24T23:04:24Z,2016-12-19T03:43:34Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,5.15,2016-12-19T03:43:35Z,2017-06-16T04:41:26Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,5.22,2017-06-16T04:41:27Z,2020-08-24T21:36:41Z,enable GPS-L5
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50036,5.45,2020-08-24T21:36:42Z,9999-01-01T00:00:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50040,4.81,2015-04-01T00:00:00Z,2015-09-17T17:25:00Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50040,4.85,2015-09-17T17:25:01Z,2016-04-18T17:15:23Z,
  Trimble Navigation Ltd.,TRIMBLE NETR9,5444R50040,5.10,2016-04-18T17:15:24Z,2016-09-19T09:01:30Z,
  