benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 tmbl, 1992-06-18,  DDZ ,   ,  ASHTECH LM-XII3,  765,  7A,  ASH700228D,  1058,  NONE, 1.2589, 1.3076, 15, 233445
 tmbl, 1992-06-19,  DDZ ,   ,  ASHTECH LM-XII3,  765,  7A,  ASH700228D,  1058,  NONE, 1.2739, 1.3225, 15, 13515
 tmbl, 1997-08-18,  unknown ,  CVO ,  Trimble 4000SSi,  16291,  NP,  TRM29659.00,  66915,  NONE, 0.9792, 0, 30, 134130
 tmbl, 1997-08-19,  unknown ,  CVO ,  Trimble 4000SSi,  16291,  NP,  TRM29659.00,  66915,  NONE, 1.0245, 0, 30, 13330
 tmbl, 1998-08-26,  unknown ,  CVO ,  Trimble 4000SSi,  16106,  NP,  TRM29659.00,  66597,  NONE, 1.352, 0, 30, 145730
 tmbl, 1998-08-27,  unknown ,  CVO ,  Trimble 4000SSi,  16106,  NP,  TRM29659.00,  66597,  NONE, 1.2216, 0, 30, 145130
 TMBL, 2002-07-11,  -Unknown- ,  -Unknown- ,  TRIMBLE 4000SSI,  16417,  NP,  TRM29659.00,  66915,  NONE, 0.967, 0, 0, 15380
 TMBL, 2002-07-12,  -Unknown- ,  -Unknown- ,  TRIMBLE 4000SSI,  16417,  NP,  TRM29659.00,  66915,  NONE, 1.026, 0, 0, 151930
 tmbl, 2008-08-07,  ST ,  USGS/Cascades Volcan,  TRIMBLE 4700,  220211182,  NP,  TRM41249.00,  60073652,  NONE, 1.2653, 1.3206, 30, 18120