benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 cart Carter_1972_CDH, 1993-07-14,  GAM ,  USGS ,  ASHTECH LM-XII3,  104,  7A26,  ASH700228D,  1068,  NONE, 1.1954, 1.2448, 30, 232230
 cart Carter_1972_CDH, 1992-08-13,  BDK ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 1.1215, 1.1718, 30, 185030
 cart Carter_1972_CDH, 1994-07-30,  WKG ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.3931, 1.4405, 30, 143030
 cart Carter_1972_CDH, 1996-07-19,  JLS ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1F00,  ASH700228D,  1068,  NONE, 1.1457, 1.1957, 30, 15260
 cart Carter_1972_CDH, 1996-07-20,  KAS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2824, 1.3309, 30, 0
 cart Carter_1972_CDH, 1998-07-25,  ECB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 1F50,  ASH700936E_C,  CR16376,  NONE, 1.2959, 1.3442, 30, 15140
 cart Carter_1972_CDH, 1998-07-26,  GDH ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F50,  ASH700936E_C,  CR16379,  NONE, 1.17, 1.2197, 30, 15200
 cart Carter_1972_CDH, 1999-07-26,  JMS ,   ,  ASHTECH,  175 ,  Z-XII3 CB00,  ASH700936E_C,  CR16365,  NONE, 1.2863, 1.3348, 30, 15300
 cart Carter_1972_CDH, 1999-07-27,  JLS ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR619992803,  NONE, 1.1488, 1.1988, 30, 15490
 cart Carter_1972_CDH, 2002-07-17,  SGP ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.1722, 1.2219, 30, 15250
 cart Carter_1972_CDH, 2002-07-18,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2612, 1.3099, 30, 152130
 cart Carter_1972_CDH, 2005-07-26,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR520031615,  NONE, 1.24, 1.2889, 30, 15290
 cart Carter_1972_CDH, 2005-09-28,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.1636, 1.2134, 30, 14520
 cart Carter_1972_CDH, 2007-07-15,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.2966, 1.3449, 30, 15370
 cart Carter_1972_CDH, 2007-07-23,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.6357, 0.6969, 30, 15450
 cart Carter_1972_CDH, 2009-07-15,  JMS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L001,  ASH700936D_M,  CR14329,  NONE, 0.4427, 0.5138, 30, 163530
 cart Carter_1972_CDH, 2009-07-16,  JMS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L001,  ASH700936D_M,  CR14329,  NONE, 0.4427, 0.5138, 30, 30
 cart Carter_1972_CDH, 2009-07-17,  JMS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L001,  ASH700936D_M,  CR14329,  NONE, 0.4427, 0.5138, 30, 30