benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 fr46 FR46_USGS, 2012-08-09,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7123, 0.7709, 15, 0
 fr46 FR46_USGS, 2012-08-10,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 0.7123, 0.7709, 15, 0
 fr46 FR46_USGS, 2015-07-08,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.7545, 0.8119, 15, 153115
 fr46 FR46_USGS, 2015-07-09,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.7545, 0.8119, 15, 0
 fr46 FR46_USGS, 2015-07-10,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.7545, 0.8119, 15, 0
 fr46 FR46_USGS, 2015-07-11,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.3.1,  ASH701945E_M,  CR620022601,  NONE, 0.7545, 0.8119, 15, 0
 fr46 FR46_USGS, 2017-07-12,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00574,  NONE, 0.8212, 0.8768, 15, 171030
 fr46 FR46_USGS, 2017-07-13,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00574,  NONE, 0.8212, 0.8768, 15, 0
 fr46 FR46_USGS, 2017-07-14,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00574,  NONE, 0.8212, 0.8768, 15, 0
 fr46 FR46_USGS, 2017-07-15,  ELP ,  USGS ,  JAVAD,  00621 ,  TRE_G3TH SIGMA3.6.9,  JAVRINGANT_DM,  00574,  NONE, 0.8212, 0.8768, 15, 0