benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 leef, 1993-10-17,  UNKNOWN ,  UNKNOWN ,  TRIMBLE 4000SST,  2931A00285,  NP,  TRM14532.00,  2952A00032,  NONE, 0.8156, 0, 30, 1770
 leef, 1994-10-23,  UNKNOWN ,  UNKNOWN ,  TRIMBLE 4000SSE,  3414A05699,  NP,  TRM22020.00+GP,  0080098261,  NONE, 0.94, 0, 30, 17030
 leef, 1995-10-14,  UNKNOWN ,  UNKNOWN ,  TRIMBLE 4000SSE,  3526A11463,  NP,  TRM22020.00+GP,  0220024645,  NONE, 0.7311, 0, 30, 0
 leef, 1996-08-31,  Wernicke Brian/Brad,  UNKNOWN ,  TRIMBLE 4000SSE,  3327A03456,  NP,  TRM14532.00,  3009A00098,  NONE, 0.6793, 0, 30, 16340
 leef, 1996-09-01,  Wernicke Brian/Brad,  UNKNOWN ,  TRIMBLE 4000SSE,  3327A03456,  NP,  TRM14532.00,  3009A00098,  NONE, 0.6793, 0, 30, 0
 leef, 2002-09-25,  Davis/Moser ,  UNKNOWN ,  TRIMBLE 4000SSE,  3318A03053,  NP,  TRM22020.00+GP,  0220048846,  NONE, 0.9723, 0, 30, 30