benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 glai, 2009-09-09,  T. Sissons ,  USGS/Cascades Volcan,  TRIMBLE 4700,  220213985,  NP,  TRM41249.00,  60250939,  NONE, 1.4078, 1.462, 15, 30
 glai, 2009-09-10,  T. Sissons ,  USGS/Cascades Volcan,  TRIMBLE 4700,  220213985,  NP,  TRM41249.00,  60250939,  NONE, 1.4078, 1.462, 15, 30