benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 ss15, 2002-09-25,  RD ,  USGS ,  TRIMBLE 5700,  220274115,  NP,  TRM41249.00,  12299661,  NONE, 0.541, 0.6095, 30, 19420
 ss15, 2002-09-26,  RD ,  USGS ,  TRIMBLE 5700,  220274115,  NP,  TRM41249.00,  12299661,  NONE, 0.541, 0.6095, 30, 30
 ss15, 2006-08-24,  RLSL ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220316049,  NP,  TRM41249.00,  12560413,  NONE, 0.6188, 0.6845, 30, 17590
 ss15, 2006-08-25,  RLSL ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220316049,  NP,  TRM41249.00,  12560413,  NONE, 0.6188, 0.6845, 30, 30
 ss15, 2006-08-26,  RLSL ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220316049,  NP,  TRM41249.00,  12560413,  NONE, 0.6188, 0.6845, 30, 30
 ss15, 2008-08-21,  RD ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  NP,  TRM41249.00,  60052133,  NONE, 0.7497, 0.812, 15, 30
 ss15, 2008-08-22,  RD ,  USGS/Cascades Volcan,  TRIMBLE 5700,  0220290947,  NP,  TRM41249.00,  60052133,  NONE, 0.7497, 0.812, 15, 30
 ss15, 2013-08-15,  Sherrod S LaHusen ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00599,  SIGMA3.5.1,  TRM41249.00,  60054886,  NONE, 0.677, 0.7411, 15, 0
 ss15, 2013-08-16,  Sherrod S LaHusen ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00599,  SIGMA3.5.1,  TRM41249.00,  60054886,  NONE, 0.677, 0.7411, 15, 0
 ss15, 2001-09-18,  unknown ,  CVO ,  TRIMBLE,  220211182 ,  4700 NP,  TRM29659.00,  14122,  NONE, 0.997, 0, 30, 12030
 ss15, 2003-09-06,  ML CH ,  USGS/Cascades Volcan,  TRIMBLE,  0220274281 ,  5700 NP,  TRM41249.00,  12300047,  NONE, 0.6402, 0.7053, 30, 30
 ss15, 2003-09-07,  ML CH ,  USGS/Cascades Volcan,  TRIMBLE,  0220274281 ,  5700 NP,  TRM41249.00,  12300047,  NONE, 0.6402, 0.7053, 30, 30
 ss15, 2004-08-27,  RLSL ,  USGS/Cascades Volcan,  TRIMBLE,  0220274280 ,  5700 NP,  TRM41249.00,  12560523,  NONE, 0.5691, 0.6365, 30, 185630
 ss15, 2004-08-28,  RLSL ,  USGS/Cascades Volcan,  TRIMBLE,  0220274280 ,  5700 NP,  TRM41249.00,  12560523,  NONE, 0.5691, 0.6365, 30, 30
 ss15, 2004-08-29,  RLSL ,  USGS/Cascades Volcan,  TRIMBLE,  0220274280 ,  5700 NP,  TRM41249.00,  12560523,  NONE, 0.5691, 0.6365, 30, 30
 ss15, 2005-08-21,  ML GRH ,  USGS/Cascades Volcan,  TRIMBLE,  0220320141 ,  5700 NP,  TRM41249.00,  60073652,  NONE, 0.6405, 0.7056, 30, 30
 ss15, 2005-08-22,  ML GRH ,  USGS/Cascades Volcan,  TRIMBLE,  0220320141 ,  5700 NP,  TRM41249.00,  60073652,  NONE, 0.6405, 0.7056, 30, 30