benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 duck Duck_93_USGS, 2001-08-01,  AWL ,  USC ,  ASHTECH Z-XII3,  389,  CC00,  ASH701945B_M,  CR519991756,  NONE, 0.4772, 0.546, 30, 30
 duck Duck_93_USGS, 2015-10-01,  SKH ,  USGS ,  JAVAD TRE_G3TH,  00470,  SIGMA-Unknown-,  TRM41249.00,  60194583,  NONE, 0.504, 0.574, 15, 20645
 duck Duck_93_USGS, 2015-10-04,  SKH ,  USGS ,  JAVAD TRE_G3TH,  00470,  SIGMA-Unknown-,  TRM41249.00,  60194583,  NONE, 0.504, 0.574, 15, 0
 duck Duck_93_USGS, 1993-09-16,  KWC ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A26,  ASH700228A,  1027,  NONE, 0.5824, 0.6457, 30, 0
 DUCK, 1993-09-17,  KWC ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A26,  ASH700228A,  1027,  NONE, 0.5835, 0.6468, 30, 2330
 duck Duck_93_USGS, 1994-08-02,  BDK ,  USGS ,  ASHTECH,  99 ,  LM-XII3 7A,  ASH700228D,  1036,  NONE, 0.561, 0.6253, 30, 15170
 duck Duck_93_USGS, 1996-07-24,  KAS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 0.5554, 0.62, 30, 30
 duck Duck_93_USGS, 1998-09-10,  RCB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 CB00,  ASH700936E_C,  CR16116,  NONE, 1.2267, 1.2758, 30, 30
 duck Duck_93_USGS, 1998-09-11,  RCB ,  USGS ,  ASHTECH,  188 ,  Z-XII3 CB00,  ASH700936E_C,  CR16116,  NONE, 1.2267, 1.2758, 30, 30
 duck Duck_93_USGS, 1999-07-29,  ASH ,   ,  ASHTECH,  LP03362 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 0.5455, 0.6105, 30, 30
 duck Duck_93_USGS, 1999-07-30,  ASH ,   ,  ASHTECH,  LP03362 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 0.5455, 0.6105, 30, 30
 duck Duck_93_USGS, 2002-07-15,  GDH ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 0.5658, 0.6299, 30, 182230
 duck Duck_93_USGS, 2002-07-16,  GDH ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 0.5658, 0.6299, 30, 10
 duck Duck_93_USGS, 2002-07-17,  GDH ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 0.5658, 0.6299, 30, 10
 duck Duck_93_USGS, 2002-07-18,  GDH ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 0.5658, 0.6299, 30, 10
 duck Duck_93_USGS, 2005-09-30,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.4961, 0.5638, 30, 0
 duck Duck_93_USGS, 2005-10-01,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.4961, 0.5638, 30, 0
 duck Duck_93_USGS, 2005-10-02,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 0.4961, 0.5638, 30, 0
 duck Duck_93_USGS, 2007-07-17,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.6159, 0.6778, 30, 0
 duck Duck_93_USGS, 2007-07-18,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.6159, 0.6778, 30, 0
 duck Duck_93_USGS, 2007-07-19,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.6159, 0.6778, 30, 0
 duck Duck_93_USGS, 2009-08-05,  JOL ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.6409, 0.7019, 30, 155815
 duck Duck_93_USGS, 2009-08-06,  JOL ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 0.6409, 0.7019, 30, 0
 duck Duck_93_USGS, 2011-08-16,  JLS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 0.6274, 0.6889, 15, 184115
 duck Duck_93_USGS, 2011-08-17,  JLS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 0.6274, 0.6889, 15, 0
 duck Duck_93_USGS, 2011-08-18,  JLS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 0.6274, 0.6889, 15, 0
 duck Duck_93_USGS, 2013-07-10,  JLS ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 0.7267, 0.7848, 15, 18115
 duck Duck_93_USGS, 2013-07-11,  JLS ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 0.7267, 0.7848, 15, 0
 duck Duck_93_USGS, 2013-07-12,  JLS ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.3.1,  ASH700936D_M,  CR14333,  NONE, 0.7267, 0.7848, 15, 0
 duck Duck_93_USGS, 2015-10-02,  SKH ,  USGS ,  JAVAD,  00470 ,  TRE_G3TH SIGMA-Unkn,  TRM41249.00,  60194583,  NONE, 0.504, 0.574, 15, 0
 duck Duck_93_USGS, 2015-10-03,  SKH ,  USGS ,  JAVAD,  00470 ,  TRE_G3TH SIGMA-Unkn,  TRM41249.00,  60194583,  NONE, 0.504, 0.574, 15, 0