benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 z137 Z_1370_1983_NGS, 1993-03-17,  GDH ,  USGS ,  ASHTECH,  763 ,  LM-XII3 6M24,  ASH700228A,  0718,  NONE, 1.3217, 1.3698, 30, 7430
 z137 Z_1370_1983_NGS, 1994-05-03,  GDH ,  USGS ,  ASHTECH,  763 ,  LM-XII3 7A,  ASH700228A,  0718,  NONE, 1.4092, 1.4565, 30, 135530
 z137 Z_1370_1983_NGS, 1995-07-10,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E00,  ASH700228A,  0598,  NONE, 1.4554, 1.5023, 30, 16150
 z137 Z_1370_1983_NGS, 1996-06-24,  GDH ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.2662, 1.3149, 30, 154730
 z137 Z_1370_1983_NGS, 1997-08-01,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936D_M,  CR14329,  NONE, 1.3429, 1.3908, 30, 16230
 z137 Z_1370_1983_NGS, 1997-10-08,  GDH ,  USGS ,  ASHTECH,  *LP02434 ,  Z-XII3 1E95,  ASH700936D_M,  *210,  NONE, 1.3136, 1.3618, 30, 1650
 z137 Z_1370_1983_NGS, 1999-02-01,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.4034, 1.4507, 30, 17120
 z137 Z_1370_1983_NGS, 1999-02-02,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14333,  NONE, 1.4861, 1.5328, 30, 162830
 z137 Z_1370_1983_NGS, 2001-02-26,  GDH ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2884, 1.3368, 30, 17190
 z137 Z_1370_1983_NGS, 2001-02-27,  GDH ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2884, 1.3368, 30, 10
 z137 Z_1370_1983_NGS, 2005-02-07,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.24, 1.2889, 30, 172930
 z137 Z_1370_1983_NGS, 2005-02-08,  GDH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.24, 1.2889, 30, 0
 z137 Z_1370_1983_NGS, 2017-03-30,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00587,  NONE, 1.1924, 1.2419, 15, 163930
 z137 Z_1370_1983_NGS, 2017-03-31,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00587,  NONE, 1.1924, 1.2419, 15, 0
 z137 Z_1370_1983_NGS, 2017-04-01,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00587,  NONE, 1.1924, 1.2419, 15, 0
 z137 Z_1370_1983_NGS, 2017-04-02,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00587,  NONE, 1.1924, 1.2419, 15, 0
 z137 Z_1370_1983_NGS, 2017-04-03,  ELP ,  USGS ,  JAVAD,  01661 ,  TRE_G3TH SIGMA3.5.1,  JAVRINGANT_DM,  00587,  NONE, 1.1924, 1.2419, 15, 0