benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hc03 HC03_unstamped_USGS, 2017-10-31,  JLS ,  USGS ,  JAVAD TRE_G3TH,  01663,  SIGMA3.5.14,  TRM41249.00,  60051967,  NONE, 0.1, 0.2228, 15, 192615
 hc03 HC03_unstamped_USGS, 2007-06-14,  GDH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.1, 0.2325, 30, 17520
 hc03 HC03_unstamped_USGS, 2007-06-15,  GDH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 0.1, 0.2325, 30, 0
 hc03 HC03_unstamped_USGS, 2009-04-16,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.1, 0.2325, 30, 0
 hc03 HC03_unstamped_USGS, 2009-04-17,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.1, 0.2325, 30, 0
 hc03 HC03_unstamped_USGS, 2009-04-18,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.1, 0.2325, 30, 0
 hc03 HC03_unstamped_USGS, 2009-04-19,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.1, 0.2325, 30, 0
 hc03 HC03_unstamped_USGS, 2009-04-20,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH701945E_M,  CR520031615,  NONE, 0.1, 0.2325, 30, 0
 hc03 HC03_unstamped_USGS, 2011-05-13,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.1, 0.2325, 15, 173215
 hc03 HC03_unstamped_USGS, 2011-05-14,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.1, 0.2325, 15, 0
 hc03 HC03_unstamped_USGS, 2011-05-15,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.1, 0.2325, 15, 0
 hc03 HC03_unstamped_USGS, 2011-05-16,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH701945E_M,  CR520031622,  NONE, 0.1, 0.2325, 15, 0
 hc03 HC03_unstamped_USGS, 2017-11-01,  JLS ,  USGS ,  JAVAD,  01663 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60051967,  NONE, 0.1, 0.2228, 15, 0
 hc03 HC03_unstamped_USGS, 2017-11-02,  JLS ,  USGS ,  JAVAD,  01663 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60051967,  NONE, 0.1, 0.2228, 15, 0