benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 13dd 13_D_1576_1948_USGS, 1994-11-19,  GDH ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E00,  ASH700228D,  1068,  NONE, 1.1467, 1.1967, 30, 14530
 13dd 13_D_1576_1948_USGS, 1996-02-09,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1F00,  ASH700228A,  0598,  NONE, 1.1859, 1.2354, 30, 16450
 13dd 13_D_1576_1948_USGS, 1996-02-18,  CHS ,  USGS ,  ASHTECH,  143 ,  Z-XII3 1F00,  ASH700718B,  11401,  NONE, 1.2702, 1.3188, 30, 16590
 13dd 13_D_1576_1948_USGS, 1997-10-26,  CHS ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 1E95,  ASH700936D_M,  CR14244,  NONE, 1.2985, 1.3468, 30, 16430
 13dd 13_D_1576_1948_USGS, 1997-10-27,  GDH ,  USGS ,  ASHTECH,  O4582 ,  Z-XII3 1E95,  ASH700936D_M,  CR14329,  NONE, 1.2227, 1.2718, 30, 163930
 13dd 13_D_1576_1948_USGS, 1999-04-17,  CHS ,  USGS ,  ASHTECH,  LP03464 ,  Z-XII3 CB00,  ASH700936D_M,  CR14341,  NONE, 1.3197, 1.3678, 30, 15470
 13dd 13_D_1576_1948_USGS, 1999-04-18,  GDH ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CB00,  ASH700936D_M,  CR14244,  NONE, 1.1346, 1.1848, 30, 15380
 13dd 13_D_1576_1948_USGS, 2003-06-05,  CHS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14329,  NONE, 1.2137, 1.2629, 30, 15480
 13dd 13_D_1576_1948_USGS, 2003-06-06,  CHS ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.2218, 1.2709, 30, 14570
 13dd 13_D_1576_1948_USGS, 2014-03-16,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH700936D_M,  CR14244,  NONE, 1.2288, 1.2778, 15, 154445
 13dd 13_D_1576_1948_USGS, 2014-03-20,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14244,  NONE, 1.2966, 1.3449, 15, 155145
 13dd 13_D_1576_1948_USGS, 2021-03-19,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.7.6,  ASH700936D_M,  CR14330,  NONE, 0.5689, 0.6328, 15, 182245
 13dd 13_D_1576_1948_USGS, 2021-03-20,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.7.6,  ASH700936D_M,  CR14330,  NONE, 0.5689, 0.6328, 15, 0
 13dd 13_D_1576_1948_USGS, 2021-03-21,  JLS ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.7.6,  ASH700936D_M,  CR14330,  NONE, 0.5689, 0.6328, 15, 0