benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 1468 Unknown, 1994-04-20,  Steve Holdorff ,  National Geodetic Su,  TRIMBLE 4000,  1528,  SSE,  TRM14532.00,  20,  NONE, 2, 0, 15, 21280
 1468 Unknown, 1994-04-21,  Steve Holdorff ,  National Geodetic Su,  TRIMBLE 4000,  1528,  SSE,  TRM14532.00,  20,  NONE, 2.22, 0, 15, 212745
 1468 Unknown, 2000-11-04,  TBW ,  Humboldt_State_Univ ,  TRIMBLE 4000SSI,  24489,  NP,  TRM22020.00+GP,  66922,  NONE, 1.7757, 0, 15, 15