benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pswl PumiceStoneWell_1999_, 1999-08-03,  UC BERKELEY ,   ,  TRIMBLE 4000SSI,  14594,  7.29,  TRM29659.00,  89288,  NONE, 0.964, 0, 30, 3029.993
 pswl PumiceStoneWell_1999_, 1999-08-04,  UC BERKELEY ,   ,  TRIMBLE 4000SSI,  14594,  7.29,  TRM29659.00,  89288,  NONE, 0.964, 0, 30, 3029.993
 PUMICE STONE, 2004-06-04,  Poland/Parker ,  USGS ,  TRIMBLE 5700,  220315215,  NP,  TRIMBLE_ZEPHYR,  12532395,  NONE, 1.2001, 0, 0, 30
 PUMICE STONE, 2004-06-05,  Poland/Parker ,  USGS ,  TRIMBLE 5700,  220315215,  NP,  TRIMBLE_ZEPHYR,  12532395,  NONE, 1.2001, 0, 0, 30
 PUMICE STONE, 2004-06-06,  Poland/Parker ,  USGS ,  TRIMBLE 5700,  220315215,  NP,  TRIMBLE_ZEPHYR,  12532395,  NONE, 1.2001, 0, 0, 30
 PUMICE STONE, 2004-06-07,  Poland/Parker ,  USGS ,  TRIMBLE 5700,  220315215,  NP,  TRIMBLE_ZEPHYR,  12532395,  NONE, 1.2001, 0, 0, 30
 pswl PumiceStoneWell_1999, 2012-07-14,  M. Lisowski ,  USGS/Cascades Volcan,  TRIMBLE,  0220320193 ,  5700 1.30,  TRM41249.00,  unknown,  NONE, 0.6069, 0.673, 15, 30
 pswl PumiceStoneWell_1999, 2012-07-15,  M. Lisowski ,  USGS/Cascades Volcan,  TRIMBLE,  0220320193 ,  5700 1.30,  TRM41249.00,  unknown,  NONE, 0.6069, 0.673, 15, 30
 pswl PumiceStoneWell_1999, 2012-07-18,  M. Lisowski ,  USGS/Cascades Volcan,  TRIMBLE,  0220315215 ,  5700 2.01,  TRM41249.00,  60054886,  NONE, 0.5374, 0.606, 15, 30