benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 sllz, 2006-07-31,  MLSE ,  USGS/Cascades Volcan,  TRIMBLE,  16106 ,  4000SSI NP,  TRM29659.00,  0220066915,  NONE, 1.0885, 0, 30, 21330
 sllz, 2006-08-01,  MLSE ,  USGS/Cascades Volcan,  TRIMBLE,  16106 ,  4000SSI NP,  TRM29659.00,  0220066915,  NONE, 1.0885, 0, 30, 30
 sllz, 2006-08-02,  MLSE ,  USGS/Cascades Volcan,  TRIMBLE,  16106 ,  4000SSI NP,  TRM29659.00,  0220066915,  NONE, 1.0885, 0, 30, 30
 sllz, 2012-07-23,  B. Pauk ,  USGS/Cascades Volcan,  TRIMBLE,  220211200 ,  4700 1.35,  TRM41249.00,  N/A,  NONE, 0.9645, 1.023, 15, 4545
 sllz, 2016-08-15,  EMB ,  USGS ,  JAVAD,  01662 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60142391,  NONE, 0.5384, 0.607, 15, 172145
 sllz, 2016-08-16,  EMB ,  USGS ,  JAVAD,  01662 ,  TRE_G3TH SIGMA3.5.1,  TRM41249.00,  60142391,  NONE, 0.5384, 0.607, 15, 0
 sllz, 2018-07-25,  MP ,  USGS ,  JAVAD,  00594 ,  TRE_G3TH SIGMA3.7.1,  TRM57971.00,  1441009066,  NONE, 0.9218, 0.9809, 15, 12215
 sllz, 2018-07-26,  E. Montgomery-Brown ,  USGS/CalVO ,  JAVAD,  00461 ,  TRE_G3TH SIGMA3.6.7,  TRM41249.00,  12532395,  NONE, 0.4749, 0.5463, 15, 14230
 sllz, 2018-07-27,  E. Montgomery-Brown ,  USGS/CalVO ,  JAVAD,  00461 ,  TRE_G3TH SIGMA3.6.7,  TRM41249.00,  12532395,  NONE, 0.4749, 0.5463, 15, 0