benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 magu Maguire_1939_US_Dept_, 1994-06-16,  unknown ,  NGS ,  TRIMBLE 4000SSE,  3404,  5.71,  TRM14532.00,  0,  NONE, 1.183, 0, 15, 174530
 magu Maguire_1939_US_Dept_, 1994-06-20,  unknown ,  NGS ,  TRIMBLE 4000SSE,  3404,  5.71,  TRM14532.00,  0,  NONE, 1.29, 0, 15, 173530
 MAGU, 1995-09-16,  unknown ,  unknown ,  TRIMBLE 4000ST,  333,  4.81,  TRM14532.00,  137,  NONE, 1.0856, 0, 0, 16330
 MAGU, 1995-09-19,  unknown ,  unknown ,  TRIMBLE 4000ST,  333,  4.81,  TRM14532.00,  137,  NONE, 1.1814, 0, 30, 16320
 magu, 1996-07-10,  CHS ,  USGS ,  ASHTECH,  4600 ,  Z-XII3 1F00,  ASH700228D,  1036,  NONE, 1.3227, 1.3708, 30, 15420
 magu, 1996-07-14,  KAS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 0.5913, 0.6542, 30, 151730
 magu, 1996-07-15,  KAS ,  USGS ,  ASHTECH,  707 ,  Z-XII3 1F00,  ASH700718B,  11404,  NONE, 0.5752, 0.6389, 30, 15290
 magu Maguire_1939_US_Dept, 2000-08-23,  JLS ,   ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.165, 1.2148, 30, 155730
 magu Maguire_1939_US_Dept, 2000-08-24,  JLS ,   ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.165, 1.2148, 30, 30
 magu Maguire_1939_US_Dept, 2004-05-21,  GDH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 0.6513, 0.7119, 30, 0
 magu Maguire_1939_US_Dept, 2004-05-22,  GDH ,  USGS ,  ASHTECH,  LP020000801 ,  Z-X ZE00,  ASH701945E_M,  CR520031622,  NONE, 0.6513, 0.7119, 30, 0