benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 grsu, 2000-07-13,  SEO ,  USC ,  ASHTECH Z-XII3,  188,  CD00,  ASH700936E_C,  CR16374,  NONE, 0.4979, 0.5655, 30, 30
 grsu, 2000-07-14,  TSB ,  USC ,  ASHTECH Z-XII3,  188,  CD00,  ASH700936E_C,  CR16374,  NONE, 0.4979, 0.5655, 30, 70
 grsu, 2002-07-26,  CE ,  USC ,  TRIMBLE 5700,  220281528,  NP,  TRM41249.00,  12337797,  NONE, 0, 0.1755, 30, 1880
 grsu, 2002-07-27,  CE ,  USC ,  TRIMBLE 5700,  220281528,  NP,  TRM41249.00,  12337797,  NONE, 0, 0.1755, 30, 19540
 grsu, 2010-07-14,  JMS ,  USGS ,  TRIMBLE,  0220320193 ,  5700 NP,  TRM41249.00,  60249097,  NONE, 0.6018, 0.6681, 15, 30
 grsu, 2010-07-15,  JMS ,  USGS ,  TRIMBLE,  0220320193 ,  5700 NP,  TRM41249.00,  60249097,  NONE, 0.6018, 0.6681, 15, 30
 grsu, 2012-07-09,  CalVO ,  USGS ,  TRIMBLE,  0220316024 ,  5700 2.01,  TRM41249.00,  60194628,  NONE, 0.5924, 0.659, 15, 30