benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 p19a, 2000-09-15,  WRT ,   ,  ASHTECH,  175 ,  Z-XII3 CD00,  ASH700936E_C,  CR16374,  NONE, 0.6199, 0.6816, 30, 16030
 p19a, 2000-09-21,  CWW ,   ,  ASHTECH,  203 ,  Z-XII3 CD00,  ASH700936E_C,  CR16364,  NONE, 1.3671, 1.4148, 30, 151430
 p19a, 2004-09-17,  RWB ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.1671, 1.2169, 30, 151430
 p19a P19A_BureauOfRecl, 2009-09-20,  CWW ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII 1L001,  ASH700936D_M,  CR14330,  NONE, 0.5205, 0.5868, 30, 163130
 p19a P19A_BureauOfRecl, 2009-09-21,  SAH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII 1L001,  ASH701945E_M,  CR520031622,  NONE, 1.159, 1.2089, 30, 15200