anchor.diff:  OROA,CG,no,Oueroa,-40.10435506,176.68067166,279,WGS84,2010-11-08T00:00:00Z,9999-01-01T00:00:00Z
   OTAK,CG,no,Tuapaka Z,-40.816546002,175.170413249,245.0853,NZGD2000,2007-03-07T00:00:00Z,9999-01-01T00:00:00Z
   OUSD,GN,no,Otago University Survey Department,-45.86950159423,170.51092025742,26.1568,NZGD2000,1995-01-16T00:00:00Z,9999-01-01T00:00:00Z
  -PAEK,CG,no,Paekakariki Hill,-41.02176626,174.95208121,443.238,NZGD2000,2003-03-22T00:00:00Z,9999-01-01T00:00:00Z
  +PAEK,CG,no,Paekakariki Hill,-41.021766288,174.95208129,443.244,NZGD2000,2003-03-22T00:00:00Z,9999-01-01T00:00:00Z
   PAKI,CG,no,Pakihiroa,-37.89398,178.0826,828,WGS84,2010-06-22T00:00:00Z,9999-01-01T00:00:00Z
   PALI,CG,no,Cape Palliser,-41.569229573,175.25478278,624.147,NZGD2000,2007-02-12T00:00:00Z,9999-01-01T00:00:00Z
   PARI,CG,no,Paritu Road,-38.92257263,177.883276367,507.4359,NZGD2000,2007-02-24T00:00:00Z,9999-01-01T00:00:00Z
  
positive.code: MKNO,CG,no,Makino Road,-39.703375975,176.028832116,832.205,NZGD2000,2011-05-11T00:00:00Z,9999-01-01T00:00:00Z
  MNHR,CG,no,Manuhara Road,-40.468646217,176.223377237,295.633,WGS84,2011-02-16T00:00:00Z,9999-01-01T00:00:00Z
  MQZG,LI,yes,McQueens Valley,-43.70273598849,172.65470302937,154.6377,NZGD2000,1999-09-27T00:00:00Z,9999-01-01T00:00:00Z
  MRBL,CG,no,Marble Point,-42.661761766,172.775203647,563.863,NZGD2000,2014-06-01T00:00:00Z,9999-01-01T00:00:00Z
  MTBL,CG,no,Mount Blewitt No. 2,-40.181361325,175.53615217,156.761,NZGD2000,2008-03-27T00:00:00Z,9999-01-01T00:00:00Z
  MTJO,LI,no,Mt John Observatory,-43.9857060039,170.4649429219,1043.6594,NZGD2000,2000-07-31T00:00:00Z,9999-01-01T00:00:00Z
  MTPR,CG,no,Mt Price,-43.336407925,170.350531621,1548.855,WGS84,2010-01-27T00:00:00Z,9999-01-01T00:00:00Z
  
negative.code: WPAW,CG,no,Waipawa,-39.89587961,176.54300597,293.452,NZGD2000,2006-04-20T00:00:00Z,9999-01-01T00:00:00Z
  WPUK,CG,no,Waipukurau,-40.06420523,176.44059928,344.435,NZGD2000,2006-04-19T00:00:00Z,9999-01-01T00:00:00Z
  WRA1,XX,no,Wairau Valley temporary,-41.595477374,173.586375972,529.5565,WGS84,2016-11-15T00:00:00Z,2017-05-28T00:00:00Z
  WRAU,CG,no,Wairau Valley,-41.595012369,173.586158958,536.385,NZGD2000,2017-02-12T00:00:00Z,9999-01-01T00:00:00Z
  WRPA,LI,no,Wairarapa,-41.06256872492,175.58323329397,204.8078,NZGD2000,2016-01-06T00:00:00Z,9999-01-01T00:00:00Z
  YALD,CG,no,Yaldhurst,-43.490770899,172.481135725,64.624,NZGD2000,2014-09-16T00:00:00Z,9999-01-01T00:00:00Z
  