benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 prtl, 2009-07-26,  BH ,  WWU ,  TRIMBLE 5700,  0220240424,  NP,  TRM41249.00,  00000000,  NONE, 0.4048, 0.4802, 15, 2200
 prtl, 2015-07-14,  MEYERS ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.2,  TRM57971.00,  1441009309,  NONE, 0.4419, 0.515, 15, 201745
 prtl, 2015-07-15,  MEYERS ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.2,  TRM57971.00,  1441009309,  NONE, 0.4419, 0.515, 15, 0