benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 mwch, 2009-09-09,  M. Lisowski ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320138,  NP,  TRM41249.00,  60194628,  NONE, 0.73, 0.7927, 15, 173730
 mwch, 2009-09-10,  M. Lisowski ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220320138,  NP,  TRM41249.00,  60194628,  NONE, 0.73, 0.7927, 15, 30