benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 m729, 2001-09-17,  TD ,  USGS ,  TRIMBLE,  3608A14632 ,  4000SSI NP,  TRM29659.00,  0220089288,  NONE, 1.4145, 0, 0, 15230
 m729, 2001-09-26,  WCH ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.2914, 1.3398, 30, 163430
 m729 729_2000_MontanaDOT, 2006-09-15,  CHS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.3046, 1.3529, 30, 15400
 m729 729_2000_MontanaDOT, 2006-09-16,  GDH ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993702,  NONE, 0.4908, 0.5588, 30, 16210