benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ptar, 2008-09-08,  ACalvertTSisson ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320193,  NP,  TRM41249.00,  60052133,  NONE, 1.058, 1.1153, 15, 195745
 ptar, 2008-09-09,  ACalvertTSisson ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320193,  NP,  TRM41249.00,  60052133,  NONE, 1.058, 1.1153, 15, 30