benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 1215, 1998-06-18,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000SSE,  4888,  NP,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 193815
 1215, 1998-07-02,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000SSE,  4888,  NP,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 143715
 1215, 1998-07-06,  unknown ,  CALIF DEPT TRANSPORT,  TRIMBLE 4000SSE,  4888,  NP,  TRM22020.00+GP,  76727,  NONE, 2, 0, 15, 202515