benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 mh11, 2010-09-02,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 202245
 mh11, 2010-09-03,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2010-09-04,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2010-09-05,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2010-09-06,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2010-09-07,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2010-09-08,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2010-09-09,  BP and ML ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  1.20,  TRM41249.00,  60269788,  NONE, 0.503, 0.5731, 15, 30
 mh11, 2015-07-31,  MEYERS ,  USGS/Cascades Volcan,  JAVAD,  00454 ,  TRE_G3TH SIGMA3.6.2,  TRM41249.00,  60125132,  NONE, 0.6533, 0.718, 15, 0
 mh11, 2015-08-01,  MEYERS ,  USGS/Cascades Volcan,  JAVAD,  00454 ,  TRE_G3TH SIGMA3.6.2,  TRM41249.00,  60125132,  NONE, 0.6533, 0.718, 15, 0
 mh11, 2015-08-02,  MEYERS ,  USGS/Cascades Volcan,  JAVAD,  00454 ,  TRE_G3TH SIGMA3.6.2,  TRM41249.00,  60125132,  NONE, 0.6533, 0.718, 15, 0
 mh11, 2015-08-03,  MEYERS ,  USGS/Cascades Volcan,  JAVAD,  00454 ,  TRE_G3TH SIGMA3.6.2,  TRM41249.00,  60125132,  NONE, 0.6533, 0.718, 15, 0