benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 htrp, 2004-10-03,  KurtParker ,  WWU ,  TRIMBLE 5700,  220240424,  NP,  TRM41249.00,  00000000,  NONE, 0.5556, 0.6235, 0, 23515
 htrp, 2007-07-24,  Brendan Hodge ,   WWU ,  TRIMBLE 5700,  220240424,  NP,  TRM41249.00,  12399088,  NONE, 0.49, 0.5607, 0, 230
 htrp, 2015-08-19,  KRAMER ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.2,  TRM41249.00,  60267811,  NONE, 0.6441, 0.7091, 15, 21545
 htrp, 2015-08-20,  KRAMER ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00600,  SIGMA3.6.2,  TRM41249.00,  60267811,  NONE, 0.6441, 0.7091, 15, 0