benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 horu Horse_unstamped_USGS, 1994-07-16,  CHS ,  USGS ,  ASHTECH LM-XII3,  99,  7A,  ASH700228D,  1036,  NONE, 1.367, 1.4147, 30, 0
 horu Horse_unstamped_USGS, 1994-07-17,  CHS ,  USGS ,  ASHTECH LM-XII3,  99,  7A,  ASH700228D,  1036,  NONE, 1.367, 1.4147, 30, 0
 horu Horse_unstamped_USGS, 1994-07-15,  CHS ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 1.367, 1.4147, 30, 16180
 horu Horse_unstamped_USGS, 2002-05-05,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.3349, 1.3829, 30, 163630
 horu Horse_unstamped_USGS, 2002-05-06,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.3349, 1.3829, 30, 10
 horu Horse_unstamped_USGS, 2002-05-07,  CHS ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.3349, 1.3829, 30, 10
 horu Horse_unstamped_USGS, 2004-09-21,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.3652, 1.4129, 30, 173630
 horu Horse_unstamped_USGS, 2004-09-22,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.3652, 1.4129, 30, 0
 horu Horse_unstamped_USGS, 2004-09-23,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.3652, 1.4129, 30, 0
 horu Horse_unstamped_USGS, 2004-09-24,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.3652, 1.4129, 30, 0
 horu Horse_unstamped_USGS, 2004-09-25,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 1.3652, 1.4129, 30, 0
 horu Horse_unstamped_USGS, 2006-07-13,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.155, 1.2049, 30, 163530
 horu Horse_unstamped_USGS, 2006-07-14,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.155, 1.2049, 30, 0
 horu Horse_unstamped_USGS, 2006-07-15,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.155, 1.2049, 30, 0
 horu Horse_unstamped_USGS, 2006-07-16,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.155, 1.2049, 30, 0
 horu Horse_unstamped_USGS, 2006-07-17,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.155, 1.2049, 30, 0