benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 brad Bradley_USGS_1952, 1996-09-08,  UC BERKELEY ,   ,  TRIMBLE 4000SSE,  14631,  7.09,  TRM22020.00+GP,  50361,  NONE, 0.8824, 0, 30, 300.022
 brad Bradley_USGS_1952, 1996-09-09,  UC BERKELEY ,   ,  TRIMBLE 4000SSE,  14631,  7.09,  TRM22020.00+GP,  50361,  NONE, 0.8824, 0, 30, 300.019
 brad Bradley_USGS_1952, 1996-09-10,  UC BERKELEY ,   ,  TRIMBLE 4000SSE,  14631,  7.09,  TRM22020.00+GP,  50361,  NONE, 0.8824, 0, 30, 300.019
 brad Bradley_USGS_1952, 1996-09-11,  UC BERKELEY ,   ,  TRIMBLE 4000SSE,  14631,  7.09,  TRM22020.00+GP,  50361,  NONE, 0.8824, 0, 30, 300.02
 brad Bradley_USGS_1952, 2000-08-04,  SEO ,  U So Cal / Ariz Stat,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  364,  NONE, 0.7455, 0.8031, 0, 30
 brad Bradley_USGS_1952, 2000-08-05,  SEO ,  U So Cal / Ariz Stat,  ASHTECH Z-XII3,  203,  CD00,  ASH700936E_C,  364,  NONE, 0.7455, 0.8031, 0, 30
 brad Bradley_USGS_1952, 1999-07-24,  UC BERKELEY ,   ,  TRIMBLE,  14797 ,  4000SSI 7.12,  TRM29659.00,  62108,  NONE, 0.7821, 0, 30, 300.006
 brad Bradley_USGS_1952, 1999-07-25,  UC BERKELEY ,   ,  TRIMBLE,  14797 ,  4000SSI 7.12,  TRM29659.00,  62108,  NONE, 0.7821, 0, 30, 300.009
 brad Bradley_USGS_1952, 1999-07-26,  UC BERKELEY ,   ,  TRIMBLE,  14797 ,  4000SSI 7.12,  TRM29659.00,  62108,  NONE, 0.7821, 0, 30, 300.011
 brad, 2004-07-08,  ML ,  USGS/Cascades Volcan,  TRIMBLE,  0220315215 ,  5700 NP,  TRM41249.00,  12532395,  NONE, 0.7549, 0.8171, 30, 155930
 brad, 2004-07-09,  ML ,  USGS/Cascades Volcan,  TRIMBLE,  0220315215 ,  5700 NP,  TRM41249.00,  12532395,  NONE, 0.7549, 0.8171, 30, 30
 brad, 2004-07-10,  ML ,  USGS/Cascades Volcan,  TRIMBLE,  0220315215 ,  5700 NP,  TRM41249.00,  12532395,  NONE, 0.7549, 0.8171, 30, 30
 brad Bradley_USGS_1952, 2011-07-20,  M Lisowski ,  USGS/Cascades Volcan,  TRIMBLE,  220211200 ,  4700 1.35,  TRM41249.00,  60054886,  NONE, 1.183, 1.239, 15, 185045
 brad Bradley_USGS_1952, 2011-07-21,  M Lisowski ,  USGS/Cascades Volcan,  TRIMBLE,  220211200 ,  4700 1.35,  TRM41249.00,  60054886,  NONE, 1.183, 1.239, 15, 30
 brad Bradley_USGS_1952, 2011-07-22,  M Lisowski ,  USGS/Cascades Volcan,  TRIMBLE,  220211200 ,  4700 1.35,  TRM41249.00,  60054886,  NONE, 1.183, 1.239, 15, 30