benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 glac, 2000-07-09,  AWL ,  USC ,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  CR16374,  NONE, 0.0614, 0.2123, 30, 30
 glac, 2002-07-27,  KEA ,  USC ,  TRIMBLE 5700,  220280498,  NP,  TRM41249.00,  8141,  NONE, 0, 0.1755, 30, 20300
 glac, 2002-07-28,  KEA ,  USC ,  TRIMBLE 5700,  220280498,  NP,  TRM41249.00,  8141,  NONE, 0, 0.1755, 30, 0
 glac, 2010-07-18,  JMS ,  USGS ,  TRIMBLE,  0220320193 ,  5700 NP,  TRM41249.00,  60249097,  NONE, 0.5385, 0.6071, 15, 30
 glac, 2010-07-19,  JMS ,  USGS ,  TRIMBLE,  0220320193 ,  5700 NP,  TRM41249.00,  60249097,  NONE, 0.5385, 0.6071, 15, 30
 glac, 2012-07-12,  CalVO ,  USGS ,  TRIMBLE,  0220315215 ,  5700 2.01,  TRM41249.00,  60267811,  NONE, 0.5239, 0.5931, 15, 30
 glac, 2012-07-13,  CalVO ,  USGS ,  TRIMBLE,  0220315215 ,  5700 2.01,  TRM41249.00,  60267811,  NONE, 0.5239, 0.5931, 15, 30