benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ctr1 Cattle_No1_1968_USC&, 1994-08-02,  WKG ,  USGS ,  ASHTECH,  619 ,  L-XII 7A,  ASH700228A,  *617,  NONE, 1.3187, 1.3668, 30, 14150
 ctr1 Cattle_No1_1968_USC&, 1996-07-24,  GDH ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 1.2228, 1.2719, 30, 16260
 ctr1 Cattle_No1_1968_USC&, 1998-07-29,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700936E_C,  CR16116,  NONE, 1.3873, 1.4348, 30, 163230
 ctr1 Cattle_No1_1968_USC&, 1998-07-30,  CHS ,  USGS ,  ASHTECH,  175 ,  Z-XII3 1F50,  ASH700936E_C,  CR16365,  NONE, 1.4196, 1.4668, 30, 161030
 ctr1 Cattle_No1_1968_USC&, 1999-07-29,  CHS ,   ,  ASHTECH,  O4591 ,  Z-XII3 CC00,  ASH700936D_M,  CR14244,  NONE, 1.4206, 1.4678, 30, 16730
 ctr1 Cattle_No1_1968_USC&, 1999-07-30,  GDH ,   ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945B_M,  CR619992805,  NONE, 1.3277, 1.3757, 30, 16330
 ctr1 Cattle_No1_1968_USC&, 2002-07-18,  GDH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.2187, 1.2679, 30, 163530
 ctr1 Cattle_No1_1968_USC&, 2002-07-19,  GDH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1934, 1.2428, 30, 16160
 ctr1 Cattle_No1_1968_USC&, 2005-07-28,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.344, 1.3919, 30, 171430
 ctr1 Cattle_No1_1968_USC&, 2005-07-29,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.344, 1.3919, 30, 0
 ctr1 Cattle_No1_1968_USC&, 2007-08-07,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR519993702,  NONE, 1.2895, 1.3379, 30, 1740
 ctr1 Cattle_No1_1968_USC&, 2007-08-08,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR519993702,  NONE, 1.2895, 1.3379, 30, 0
 ctr1 Cattle_No1_1968_USC&, 2010-07-25,  JMS ,  USGS ,  TRIMBLE,  0220320135 ,  5700 NP,  TRM41249.00,  60249097,  NONE, 1.2002, 1.2561, 15, 30