benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hami Hamilton_1989_Oregon_, 1997-08-11,  unknown ,  CVO ,  Trimble 4000SSi,  14855,  NP,  TRM29659.00,  610170,  NONE, 0.965, 0, 30, 13350
 hami Hamilton_1989_Oregon_, 1997-08-12,  unknown ,  CVO ,  Trimble 4000SSi,  14855,  NP,  TRM29659.00,  610170,  NONE, 1.2262, 0, 30, 133730
 hami Hamilton_1989_Oregon_, 1998-08-21,  JOHN L WAFFENSCHMIDT,  LINCOLN COUNTY SURVE,  LEICA SR9500,  71950,  4.1,  LEIAT303-RD,  280424,  NONE, 1.5319, 0, 0, 15715
 hami Hamilton_1989_Oregon_, 1998-08-24,  PHILLIP B LAMBERSON ,  LINCOLN COUNTY SURVE,  LEICA SR9500,  71950,  4.1,  LEIAT303-RD,  730025,  NONE, 1.5079, 0, 0, 184315
 hami Hamilton_1989_Oregon_, 1998-08-25,  PHILLIP B LAMBERSON ,  LINCOLN COUNTY SURVE,  LEICA SR9500,  71950,  4.1,  LEIAT303-RD,  730025,  NONE, 1.5199, 0, 0, 144445
 hami Hamilton_1989_Oregon_, 1998-12-17,  KEN J CHHAMBERLAIN ,  US FOREST SERVICE ,  TRIMBLE 4000SSE,  3337A03919,  Nav,  TRM22020.00+GP,  000128157,  NONE, 1.3507, 0, 15, 191045
 hami Hamilton_1989_Oregon_, 2013-09-06,  R.McCaffrey/R.King ,  PSU/MIT ,  TRIMBLE NETR9,  5230K51061,  4.70,  TRM29659.00,  0220062092,  NONE, 1.256, 0, 0, 170
 hami Hamilton_1989_Oregon, 1992-08-31,  GFS ,  USGS ,  ASHTECH,  623 ,  LM-XII3 6AJ2,  ASH700228A,  *683,  NONE, 1.1718, 1.2215, 30, 2220
 hami Hamilton_1989_Oregon, 1994-08-21,  WDN ,  USGS ,  ASHTECH,  104 ,  LM-XII3 7A,  ASH700228D,  1068,  NONE, 1.2825, 1.331, 30, 3330
 hami Hamilton_1989_Oregon, 2000-07-29,  CHS ,   ,  ASHTECH,  O4579 ,  Z-XII3 CC00,  ASH701945.02B,  CR619992805,  NONE, 1.353, 1.4008, 30, 153530
 hami Hamilton_1989_Oregon, 2000-07-30,  JMS ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14333,  NONE, 1.3015, 1.3498, 30, 154030