benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 knob Knob_1930_USC&GS, 1994-06-01,  WKG ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 1.372, 1.4196, 30, 13250
 knob Knob_1930_USC&GS, 1994-06-02,  JMS ,  USGS ,  ASHTECH,  764 ,  LM-XII3 7A,  ASH700228A,  0598,  NONE, 1.3469, 1.3948, 30, 15120
 knob Knob_1930_USC&GS, 1995-09-11,  GDH ,  USGS ,  ASHTECH,  *LP00108 ,  Z-XII3 1E24,  ASH700718B,  11404,  NONE, 1.1996, 1.249, 30, 16370
 knob Knob_1930_USC&GS, 1996-10-21,  GDH ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2288, 1.2778, 30, 201930
 knob Knob_1930_USC&GS, 1996-10-22,  GDH ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2288, 1.2778, 30, 14030
 knob Knob_1930_USC&GS, 1996-10-23,  GDH ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2288, 1.2778, 30, 14030
 knob Knob_1930_USC&GS, 1996-10-24,  GDH ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2288, 1.2778, 30, 14030
 knob Knob_1930_USC&GS, 1996-11-07,  GDH ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1E95,  ASH700718B,  11416,  NONE, 1.2086, 1.2579, 30, 210
 knob Knob_1930_USC&GS, 1997-09-08,  GDH ,  USGS ,  ASHTECH,  *LP02434 ,  Z-XII3 1E95,  ASH700936D_M,  *210,  NONE, 1.2348, 1.2838, 30, 16540
 knob Knob_1930_USC&GS, 1997-09-09,  GDH ,  USGS ,  ASHTECH,  *LP02434 ,  Z-XII3 1E95,  ASH700936D_M,  *210,  NONE, 1.2348, 1.2838, 30, 10
 knob Knob_1930_USC&GS, 1997-09-15,  GDH ,  USGS ,  ASHTECH,  *LP02434 ,  Z-XII3 1E95,  ASH700936D_M,  *210,  NONE, 1.2348, 1.2838, 30, 161530
 knob Knob_1930_USC&GS, 1997-09-16,  GDH ,  USGS ,  ASHTECH,  *LP02434 ,  Z-XII3 1E95,  ASH700936D_M,  *210,  NONE, 1.2348, 1.2838, 30, 10
 knob Knob_1930_USC&GS, 1998-11-16,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CB00,  ASH700936D_M,  CR14341,  NONE, 1.3055, 1.3538, 30, 192230
 knob Knob_1930_USC&GS, 1998-11-17,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CB00,  ASH700936D_M,  CR14341,  NONE, 1.3055, 1.3538, 30, 10
 knob Knob_1930_USC&GS, 1998-11-18,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 CB00,  ASH700936D_M,  CR14341,  NONE, 1.3055, 1.3538, 30, 10
 knob Knob_1930_USC&GS, 2000-04-15,  GDH ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2328, 1.2818, 30, 15120
 knob Knob_1930_USC&GS, 2000-04-16,  GDH ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2328, 1.2818, 30, 10
 knob Knob_1930_USC&GS, 2000-04-17,  GDH ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2328, 1.2818, 30, 10
 knob Knob_1930_USC&GS, 2000-04-18,  GDH ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2328, 1.2818, 30, 10
 knob Knob_1930_USC&GS, 2000-04-19,  GDH ,   ,  ASHTECH,  O4591 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2328, 1.2818, 30, 10
 knob Knob_1930_USC&GS, 2001-10-30,  GDH ,  USGS ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2095, 1.2588, 30, 10
 knob Knob_1930_USC&GS, 2001-10-31,  GDH ,  USGS ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2095, 1.2588, 30, 10
 knob Knob_1930_USC&GS, 2001-11-01,  GDH ,  USGS ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2095, 1.2588, 30, 10
 knob Knob_1930_USC&GS, 2001-11-06,  GDH ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2257, 1.2748, 30, 173730
 knob Knob_1930_USC&GS, 2001-11-07,  GDH ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2257, 1.2748, 30, 10
 knob Knob_1930_USC&GS, 2001-11-08,  GDH ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.2257, 1.2748, 30, 10
 knob Knob_1930_USC&GS, 2004-03-13,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.3592, 1.4069, 30, 30
 knob Knob_1930_USC&GS, 2004-03-14,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.3592, 1.4069, 30, 30
 knob Knob_1930_USC&GS, 2004-03-15,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.3592, 1.4069, 30, 30
 knob Knob_1930_USC&GS, 2004-03-16,  CHS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.3592, 1.4069, 30, 30