benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 pack, 1994-08-12,  unknown ,  CVO ,  TRIMBLE 4000SSE,  03597,  GammaNP5.66SP,  TRM14532.00,  68853,  NONE, 1.3518, 0, 30, 12450
 pack, 1994-08-16,  JJD ,  USGS/CVO ,  ASHTECH LM-XII3,  007,  7A,  ASH700228D,  007,  NONE, 1.3236, 1.3717, 15, 12445
 pack PackwoodAir_1990_NGS, 1999-09-14,  DJ ,  Central Washington U,  TRIMBLE 4000SSI,  24426,  NP,  TRM29659.00,  66196,  NONE, 1.201, 0, 30, 30
 pack PackwoodAir_1990_NGS, 1999-09-15,  DJ ,  Central Washington U,  TRIMBLE 4000SSI,  24426,  NP,  TRM29659.00,  66196,  NONE, 1.201, 0, 30, 30
 pack PackwoodAir_1990_NGS, 1999-09-16,  DJ ,  Central Washington U,  TRIMBLE 4000SSI,  24426,  NP,  TRM29659.00,  66196,  NONE, 1.201, 0, 30, 30
 pack PackwoodAir_1990_NGS, 1999-09-17,  DJ ,  Central Washington U,  TRIMBLE 4000SSI,  24426,  NP,  TRM29659.00,  66196,  NONE, 1.201, 0, 30, 30
 pack PackwoodAir_1990_NGS, 2008-07-10,  ST ,  USGS/Cascades Volcan,  TRIMBLE NETRS,  4724134690,  NP,  TRM41249.00,  60078853,  NONE, 1.0547, 1.1121, 15, 17330
 pack, 2000-09-14,  unknown ,  CVO ,  TRIMBLE,  24595 ,  4000SSI NP,  TRM29659.00,  138192,  NONE, 1.47, 0, 30, 1500
 pack, 2000-09-15,  unknown ,  CVO ,  TRIMBLE,  24595 ,  4000SSI NP,  TRM29659.00,  138192,  NONE, 1.4498, 0, 30, 135530
 pack PackwoodAir_1990_NGS, 2003-08-21,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 0.6159, 0.6778, 30, 1750
 pack PackwoodAir_1990_NGS, 2003-08-22,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 0.6159, 0.6778, 30, 30
 pack PackwoodAir_1990_NGS, 2003-08-23,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 0.6159, 0.6778, 30, 30
 pack PackwoodAir_1990_NGS, 2003-08-24,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 0.6159, 0.6778, 30, 30
 pack PackwoodAir_1990_NGS, 2003-08-25,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 0.6159, 0.6778, 30, 30