benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 spbr, 2001-09-17,  GB ,  USGS ,  TRIMBLE,  3608A14631 ,  4000SSI NP,  TRM29659.00,  0220073541,  NONE, 1.3941, 0, 0, 155730
 spbr, 2001-09-25,  WRT ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.5032, 1.5498, 30, 161430
 spbr Spotted_Bear_1983_Bo, 2005-09-27,  WRT ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.3016, 1.3499, 30, 161830
 spbr Spotted_Bear_1983_Bo, 2006-09-17,  GDH ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993702,  NONE, 0.5521, 0.6168, 30, 165230
 spbr Spotted_Bear_1993_Bo, 2012-09-16,  GDH ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.3349, 1.3829, 15, 162845
 spbr Spotted_Bear_1993_Bo, 2012-09-18,  GDH ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.3056, 1.3539, 15, 17315