benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 sarg Sarg_1990_NGS, 1993-08-11,  JWK ,  USGS-CVO ,  ASHTECH LM-XII3,  006,  7A,  ASH700228A,  006,  NONE, 1.7028, 1.748, 15, 211545
 sarg Sarg_1990_NGS, 1993-08-12,  JWK ,  USGS-CVO ,  ASHTECH LM-XII3,  006,  7A,  ASH700228A,  006,  NONE, 1.6692, 1.7146, 15, 211015
 sarg Sarg_1990_NGS, 2003-08-25,  GDH ,  USGS ,  ASHTECH Z-X,  ZE120023208,  ZE00,  ASH701945B_M,  CR519993702,  NONE, 1.3178, 1.3659, 30, 153830
 sarg Sarg_1990_NGS, 2003-08-26,  CHS ,  USGS ,  ASHTECH Z-XII3,  LP019992804,  CD00,  ASH701945B_M,  CR519993706,  NONE, 1.4288, 1.476, 30, 151330
 sarg Sarg_1990_NGS, 2012-09-08,  McCaffrey ,  PSU ,  TPS GB-1000,  T224620,  3.1,  TRM57971.00,  1441004548,  NONE, 1.4521, 1.5061, 0, 1280