benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 hth2 HATHWAY_2_1965_USGS, 2006-11-01,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 0.4812, 0.5498, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2006-11-02,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 0.4812, 0.5498, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2006-11-03,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 0.4812, 0.5498, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2006-11-04,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 0.4812, 0.5498, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2006-11-05,  JLS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 0.4812, 0.5498, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2008-10-23,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.736, 0.7939, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2008-10-24,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 0.736, 0.7939, 30, 0
 hth2 HATHWAY_2_1965_USGS, 2010-05-18,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 0.6947, 0.7538, 15, 18345
 hth2 HATHWAY_2_1965_USGS, 2010-05-19,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 0.6947, 0.7538, 15, 0
 hth2 HATHWAY_2_1965_USGS, 2010-05-20,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 0.6947, 0.7538, 15, 0
 hth2 HATHWAY_2_1965_USGS, 2010-05-21,  JLS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 0.6947, 0.7538, 15, 0
 hth2 HATHWAY_2_1965_USGS, 2015-03-25,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 0.7298, 0.7879, 15, 0
 hth2 HATHWAY_2_1965_USGS, 2015-03-26,  ELP ,  USGS ,  JAVAD,  00598 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR520031615,  NONE, 0.7298, 0.7879, 15, 0