benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 grap, 1993-10-16,  UNKNOWN ,  UNKNOWN ,  TRIMBLE 4000SSE,  3327A03467,  NP,  TRM14532.00,  2952A00031,  NONE, 1.1447, 0, 30, 162030
 grap, 1994-10-22,  UNKNOWN ,  UNKNOWN ,  TRIMBLE 4000SSE,  3414A05699,  NP,  TRM22020.00+GP,  0080098261,  NONE, 0.8917, 0, 30, 173330
 grap, 1995-10-14,  UNKNOWN ,  UNKNOWN ,  TRIMBLE 4000SSE,  3526A11446,  NP,  TRM22020.00+GP,  0220024341,  NONE, 1.0114, 0, 30, 0
 grap, 1996-09-01,  Davis/Bennett ,  UNKNOWN ,  TRIMBLE 4000SSE,  3526A11509,  NP,  TRM22020.00+GP,  0220024640,  NONE, 0.9074, 0, 30, 0
 grap, 2002-09-25,  Hogan/Bennett ,  Caltech/SAO ,  TRIMBLE 4000SSE,  3307A02532,  NP,  TRM22020.00+GP,  80053861,  NONE, 1.0332, 0, 30, 30