benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 butc, 2000-07-07,  SEO ,  USC ,  ASHTECH Z-XII3,  278,  CD00,  ASH700936E_C,  CR16364,  NONE, 0.5208, 0.5871, 30, 12830
 butc, 2002-07-30,  SDM ,  USC ,  ASHTECH Z-XII3,  175,  CD00,  ASH700936E_C,  364,  NONE, 0.5358, 0.6014, 30, 560
 butc, 2002-07-31,  SDM ,  USC ,  ASHTECH Z-XII3,  175,  CD00,  ASH700936E_C,  364,  NONE, 0.5358, 0.6014, 30, 30
 butc, 2010-07-23,  JMS ,  USGS ,  TRIMBLE,  0220320174 ,  5700 NP,  TRM41249.00,  12561609,  NONE, 1.3297, 1.3845, 15, 15330
 butc, 2010-07-24,  JMS ,  USGS ,  TRIMBLE,  0220320174 ,  5700 NP,  TRM41249.00,  12561609,  NONE, 1.3297, 1.3845, 15, 30