benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pine, 1999-09-10,  WRT ,   ,  ASHTECH,  188 ,  Z-XII3 CD00,  ASH700936E_C,  CR16365,  NONE, 1.3015, 1.3498, 30, 162530
 pine, 1999-09-28,  WRT ,   ,  ASHTECH,  188 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.2065, 1.2558, 30, 16730
 pine Pine_USGS_plug, 2003-06-27,  JMS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZC00,  ASH701945B_M,  CR519993703,  NONE, 1.1924, 1.2419, 30, 163630
 pine Pine_USGS_plug, 2003-06-29,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.1702, 1.22, 30, 15320
 pine Pine_USGS_plug, 2008-09-07,  CWW ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII 1L00,  ASH700936D_M,  CR14329,  NONE, 1.161, 1.2109, 30, 155330
 pine Pine_USGS_plug, 2008-09-10,  GDH ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 1.1681, 1.2179, 30, 153030
 pine Pine_USGS_plug, 2013-09-18,  WRT ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.1975, 1.2469, 15, 174815