benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 heln, 1997-08-11,  unknown ,  CVO ,  Trimble 4000SSi,  16291,  NP,  TRM29659.00,  66915,  NONE, 1.306, 0, 30, 13440
 heln, 1997-08-12,  unknown ,  CVO ,  Trimble 4000SSi,  16291,  NP,  TRM29659.00,  66915,  NONE, 1.5042, 0, 30, 132830
 heln, 1998-08-26,  JOSEPH D DIMARE ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  11526,  Nav,  TRM22020.00+GP,  30426,  NONE, 2, 0, 15, 14460
 heln, 1998-08-27,  JOSEPH D DIMARE ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  11526,  Nav,  TRM22020.00+GP,  30426,  NONE, 2, 0, 15, 183745
 heln, 1998-08-28,  JOSEPH D DIMARE ,  NATIONAL GEODETIC SU,  TRIMBLE 4000SSE,  11526,  Nav,  TRM22020.00+GP,  30426,  NONE, 2, 0, 15, 14380