benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 33jd 33_JDG_1984_USGS, 1992-10-21,  JMS ,  USGS ,  ASHTECH,  749 ,  LM-XII3 6M24,  ASH700228A,  0598,  NONE, 1.2855, 1.334, 30, 171530
 33jd 33_JDG_1984_USGS, 1992-12-16,  KWC ,  USGS ,  ASHTECH,  0831 ,  LM-XII3 6M24,  ASH700228A,  1027,  NONE, 1.4744, 1.5212, 30, 115630
 33jd 33_JDG_1984_USGS, 1993-11-19,  CHS ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.2765, 1.3251, 30, 45730
 33jd 33_JDG_1984_USGS, 1995-04-18,  GDH ,  USGS ,  ASHTECH,  831 ,  LM-XII3 7A,  ASH700228A,  1027,  NONE, 1.2473, 1.2961, 30, 193130
 33jd 33_JDG_1984_USGS, 1996-05-15,  GDH ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.1396, 1.1897, 30, 15170
 33jd 33_JDG_1984_USGS, 1996-05-16,  GDH ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.1396, 1.1897, 30, 30
 33jd 33_JDG_1984_USGS, 2001-05-23,  CHS ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.3439, 1.3918, 30, 154430
 33jd 33_JDG_1984_USGS, 2001-05-30,  GDH ,   ,  ASHTECH,  O4582 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.2156, 1.2648, 30, 16330
 33jd 33_JDG_1984_USGS, 2003-03-18,  CHS ,  USGS ,  ASHTECH,  04600 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.2986, 1.3469, 30, 16130
 33jd 33_JDG_1984_USGS, 2003-03-19,  CHS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14333,  NONE, 1.244, 1.2929, 30, 1630
 33jd 33_JDG_1984_USGS, 2005-04-20,  GDH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1621, 1.2119, 30, 16120
 33jd 33_JDG_1984_USGS, 2005-04-28,  JMS ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.3248, 1.3729, 30, 1650
 33jd 33_JDG_1984_USGS, 2006-05-16,  GDH ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.1712, 1.2209, 30, 154530
 33jd 33_JDG_1984_USGS, 2006-05-17,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.341, 1.3889, 30, 15130
 33jd 33_JDG_1984_USGS, 2008-05-14,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 1.3248, 1.3729, 30, 152230
 33jd 33_JDG_1984_USGS, 2008-05-15,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 1.3602, 1.4079, 30, 15260
 33jd 33_JDG_1984_USGS, 2017-05-11,  ELP ,  USGS ,  JAVAD,  00618 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00587,  NONE, 0.7607, 0.8179, 15, 153715
 33jd 33_JDG_1984_USGS, 2017-05-14,  ELP ,  USGS ,  JAVAD,  01337 ,  TRE_G3TH SIGMA3.5.1,  ASH701945E_M,  CR520031622,  NONE, 0.7247, 0.7829, 15, 151515