benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 avgr, 2009-07-29,  BH ,  WWU ,  TRIMBLE 5700,  0220240424,  NP,  TRM39105.00,  00000000,  NONE, 0.4692, 0, 15, 192845
 avgr, 2009-07-30,  BH ,  WWU ,  TRIMBLE 5700,  0220240424,  NP,  TRM41249.00,  00000000,  NONE, 0.4692, 0.5409, 15, 0
 avgr, 2015-06-30,  KRAMER ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00483,  SIGMA3.6.2,  TRM41249.00,  M33787,  NONE, 0.552, 0.62, 15, 18515
 avgr, 2015-07-01,  KRAMER ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00483,  SIGMA3.6.2,  TRM41249.00,  M33787,  NONE, 0.552, 0.62, 15, 0
 avgr, 2015-07-02,  KRAMER ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00483,  SIGMA3.6.2,  TRM41249.00,  M33787,  NONE, 0.552, 0.62, 15, 0