benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 emgr, 2004-07-11,  ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320138,  NP,  TRM41249.00,  12560472,  NONE, 1.5902, 1.6433, 30, 1720
 emgr, 2004-07-12,  ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320138,  NP,  TRM41249.00,  12560472,  NONE, 1.5902, 1.6433, 30, 30
 emgr, 2006-07-30,  MLKA ,  USGS/Cascades Volcan,  TRIMBLE 4000SSI,  16106,  NP,  TRM29659.00,  0220066915,  NONE, 1.1375, 0, 30, 30
 emgr, 2018-07-24,  E. Montgomery-Brown ,  USGS/CalVO ,  JAVAD TRE_G3TH,  01662,  SIGMA3.5.10,  TRM41249.00,  60194583,  NONE, 0.7234, 0.7863, 15, 232045
 emgr, 2006-07-29,  MLKA ,  USGS/Cascades Volcan,  TRIMBLE,  16106 ,  4000SSI NP,  TRM29659.00,  0220066915,  NONE, 1.1375, 0, 30, 30
 emgr, 2012-07-20,  Melissa Davidson ,  USGS/Cascades Volcan,  TRIMBLE,  220214232 ,  4700 1.35,  TRM41249.00,  N/A,  NONE, 1.2022, 1.258, 15, 33530
 emgr, 2012-07-21,  Melissa Davidson ,  USGS/Cascades Volcan,  TRIMBLE,  220214232 ,  4700 1.35,  TRM41249.00,  N/A,  NONE, 1.2022, 1.258, 15, 0
 emgr, 2018-07-25,  E. Montgomery-Brown ,  USGS/CalVO ,  JAVAD,  01662 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60194583,  NONE, 0.7234, 0.7863, 15, 0
 emgr, 2018-07-26,  E. Montgomery-Brown ,  USGS/CalVO ,  JAVAD,  01662 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60194583,  NONE, 0.7234, 0.7863, 15, 0