benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 jhns, 1999-09-10,  WRT ,   ,  ASHTECH,  375 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.0905, 1.1413, 30, 460
 jhns, 1999-09-28,  WRT ,   ,  ASHTECH,  175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16365,  NONE, 1.3217, 1.3698, 30, 220
 jhns Jhns_USGS_plug, 2003-06-27,  JMS ,  USGS ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.1053, 1.1558, 30, 1650
 jhns Jhns_USGS_plug, 2003-06-28,  JMS ,  USGS ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.1053, 1.1558, 30, 30
 jhns Jhns_USGS_plug, 2003-06-29,  JMS ,  USGS ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.1053, 1.1558, 30, 30
 jhns Jhns_USGS_plug, 2008-09-06,  CWW ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII 1L00,  ASH701945B_M,  CR519993706,  NONE, 0.643, 0.7039, 30, 17300
 jhns Jhns_USGS_plug, 2008-09-07,  CWW ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII 1L00,  ASH701945B_M,  CR519993706,  NONE, 0.643, 0.7039, 30, 30
 jhns Jhns_USGS_plug, 2013-09-05,  JLS ,  USGS ,  JAVAD,  00619 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14341,  NONE, 0.6958, 0.7549, 15, 0
 jhns Jhns_USGS_plug, 2013-09-06,  JLS ,  USGS ,  JAVAD,  00619 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14341,  NONE, 0.6958, 0.7549, 15, 0
 jhns Jhns_USGS_plug, 2013-09-07,  JLS ,  USGS ,  JAVAD,  00619 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14341,  NONE, 0.6958, 0.7549, 15, 0