benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 B300, 1995-09-20,  unknown ,  unknown ,  TRIMBLE 4000ST,  339,  4.81,  TRM14532.00,  130,  NONE, 1.0325, 0, 30, 18240
 B300, 1995-09-21,  unknown ,  unknown ,  TRIMBLE 4000SE,  3451,  6.12,  TRM14532.00,  68498,  NONE, 1.3393, 0, 30, 163030
 B300, 1995-09-26,  unknown ,  unknown ,  TRIMBLE 4000ST,  339,  4.81,  TRM14532.00,  130,  NONE, 0.9383, 0, 30, 210
 b300 B_300_USGS, 1996-09-18,  JMS ,  USGS ,  ASHTECH Z-XII3,  *LP00141,  1F00,  ASH700718B,  11416,  NONE, 1.2349, 1.2839, 30, 235959.998
 b300 B_300_USGS, 1996-09-19,  JMS ,  USGS ,  ASHTECH Z-XII3,  *LP00141,  1F00,  ASH700718B,  11416,  NONE, 1.2349, 1.2839, 30, 235959.996
 b300 B_300_USGS, 1992-10-05,   ,   ,  TURBOROGUE,  116 ,   ,  AOAD/M_T,  116,  NONE, 1.2804, 0, 30, 162830
 b300 B_300_USGS, 1992-10-06,   ,   ,  TURBOROGUE,  116 ,   ,  AOAD/M_T,  116,  NONE, 1.2814, 0, 30, 0
 b300 B_300_USGS, 1992-10-07,   ,   ,  TURBOROGUE,  116 ,   ,  AOAD/M_T,  116,  NONE, 1.2814, 0, 30, 0
 b300 B_300_USGS, 1992-10-08,   ,   ,  TURBOROGUE,  116 ,   ,  AOAD/M_T,  116,  NONE, 1.2289, 0, 30, 0
 b300, 1996-07-10,  JMS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2268, 1.2759, 30, 164530
 b300, 1996-07-11,  JMS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 1.2268, 1.2759, 30, 30
 b300 B_300_USGS, 1996-09-17,  JMS ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 1.2349, 1.2839, 30, 15580
 b300 B_300_USGS, 1996-09-20,  KAS ,  USGS ,  ASHTECH,  *LP00141 ,  Z-XII3 1F00,  ASH700718B,  11416,  NONE, 0.5135, 0.5802, 30, 14230
 b300 B_300_USGS, 2000-08-22,  JLS ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.166, 1.2158, 30, 175930
 b300 B_300_USGS, 2000-08-23,  JLS ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.166, 1.2158, 30, 30
 b300 B_300_USGS, 2000-08-24,  JLS ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.166, 1.2158, 30, 30
 b300 B_300_USGS, 2000-08-25,  JLS ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.166, 1.2158, 30, 30
 b300 B_300_USGS, 2002-09-09,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.1985, 1.2479, 30, 15190
 b300 B_300_USGS, 2002-09-10,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.1985, 1.2479, 30, 10
 b300 B_300_USGS, 2002-09-11,  CWW ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 0.9387, 0.9919, 30, 145330
 b300 B_300_USGS, 2002-09-12,  CWW ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 0.9387, 0.9919, 30, 10
 b300 B_300_USGS, 2002-09-13,  CWW ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 0.9387, 0.9919, 30, 10
 b300 B_300_USGS, 2004-05-17,  JMS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 1.2834, 1.3319, 30, 30
 b300 B_300_USGS, 2004-05-18,  JMS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 1.2834, 1.3319, 30, 30
 b300 B_300_USGS, 2004-05-19,  JMS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 1.2834, 1.3319, 30, 30
 b300 B_300_USGS, 2004-05-20,  JMS ,  USGS ,  ASHTECH,  LP020000801 ,  Z-XII3 CD00,  ASH700936D_M,  CR14244,  NONE, 1.2834, 1.3319, 30, 30