benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 f23x F_23_1933_USC&GS, 1994-11-18,  GDH ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E00,  ASH700228D,  1068,  NONE, 1.1739, 1.2236, 30, 14440
 f23x F_23_1933_USC&GS, 1996-02-11,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.1965, 1.2459, 30, 164630
 f23x F_23_1933_USC&GS, 1996-02-17,  GDH ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 1.1682, 1.2179, 30, 16360
 f23x F_23_1933_USC&GS, 1997-10-29,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700936D_M,  CR14244,  NONE, 1.2692, 1.3178, 30, 1750
 f23x F_23_1933_USC&GS, 1997-10-30,  JMS ,  USGS ,  ASHTECH,  O4591 ,  Z-XII3 1E95,  ASH700936D_M,  CR14330,  NONE, 1.2661, 1.3148, 30, 164930
 f23x F_23_1933_USC&GS, 1999-04-21,  GDH ,  USGS ,  ASHTECH,  O4579 ,  Z-XII3 1E95,  ASH700936E_C,  CR16975,  NONE, 1.1397, 1.1898, 30, 15460
 f23x F_23_1933_USC&GS, 1999-04-22,  JMS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 CB00,  ASH700936D_M,  CR14329,  NONE, 1.1822, 1.2318, 30, 152730
 f23x F_23_1933_USC&GS, 2003-06-09,  JLS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.156, 1.2059, 30, 154830
 f23x F_23_1933_USC&GS, 2003-06-10,  GDH ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022605,  NONE, 1.1499, 1.1999, 30, 153430
 f23x F_23_1933_USC&GS, 2014-03-23,  JLS ,  USGS ,  JAVAD,  00624 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031622,  NONE, 1.1469, 1.1969, 15, 132145
 f23x F_23_1933_USC&GS, 2014-03-24,  JLS ,  USGS ,  JAVAD,  00619 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.619, 0.6808, 15, 20515
 f23x F_23_1933_USC&GS, 2021-10-25,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.7.6,  ASH701945E_M,  CR520031615,  NONE, 0.5342, 0.5998, 15, 0
 f23x F_23_1933_USC&GS, 2021-10-26,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.7.6,  ASH701945E_M,  CR520031615,  NONE, 0.5584, 0.6228, 15, 135315