benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 rkbu Rocky_Butte_1889_USC&, 1993-08-09,  JWK ,  USGS ,  ASHTECH M-XII,  007,  7A,  ASH700228D,  007,  NONE, 1.7868, 1.8316, 15, 211145
 rkbu Rocky_Butte_1889_USC&, 1993-08-10,  JWK ,  USGS-CVO ,  ASHTECH LM-XII3,  007,  7A,  ASH700228D,  007,  NONE, 1.7482, 1.7932, 15, 211445
 rkbu Rocky_Butte_1889_USC&, 1997-08-13,  unknown ,  CVO ,  Trimble 4000SSi,  16418,  NP,  TRM29659.00,  66596,  NONE, 1.468, 0, 30, 133430
 rkbu Rocky_Butte_1889_USC&, 1997-08-14,  unknown ,  CVO ,  Trimble 4000SSi,  16418,  NP,  TRM29659.00,  66596,  NONE, 1.4004, 0, 30, 13400
 rkbu, 1998-08-27,  ALAN H GRANDSTAFF ,  MULTNOMAH COUNTY SUR,  LEICA SR399,  097620,  4.1,  LEISR399_INT,  2797,  NONE, 1.9921, 0, 0, 183515
 rkbu, 1998-08-28,  ALAN H GRANDSTAFF ,  MULTNOMAH COUNTY SUR,  LEICA SR399,  2797,  4.1,  LEISR399_INT,  097620,  NONE, 1.9791, 0, 0, 143415
 rkbu, 1998-08-31,  ALAN H GRANDSTAFF ,  MULTNOMAH COUNTY SUR,  LEICA SR399,  2797,  4.1,  LEISR399_INT,  097620,  NONE, 1.9891, 0, 0, 182215
 rkbu Rocky_Butte_1889_USC, 1994-08-17,  MHM ,  USGS ,  ASHTECH,  283 ,  Z-XII3 1C01,  ASH700228A,  134,  NONE, 1.5638, 1.6099, 30, 163930
 rkbu, 1994-08-20,  David Verdonck ,  Univ of Wash ,  TRIMBLE,  3058 ,  4000SSE Nav,  4000ST,  68502,  L1/L2, 1.6604, 0, 15, 15170
 rkbu Rocky_Butte_1889_USC, 2000-07-27,  GDH ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.3903, 1.4378, 30, 155130