benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 blck, 2001-08-24,  ML ,   ,  ASHTECH Z-XII3,  604,  CD00,  ASH701945B_M,  803,  NONE, 1.0362, 1.0877, 30, 141330
 blck, 1999-09-13,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14244,  NONE, 1.1042, 1.1548, 30, 15470
 blck, 1999-09-20,  JMS ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.1082, 1.1587, 30, 154630
 blck, 2004-08-24,  EYI ,  USGS/Cascades Volcan,  TRIMBLE,  0220320138 ,  5700 NP,  TRM41249.00,  12299551,  NONE, 0.9107, 0.97, 30, 182930
 blck, 2004-08-25,  EYI ,  USGS/Cascades Volcan,  TRIMBLE,  0220320138 ,  5700 NP,  TRM41249.00,  12299551,  NONE, 0.9107, 0.97, 30, 30
 blck, 2008-10-09,  EYI ,  USGS/Cascades Volcan,  TRIMBLE,  0220292018 ,  5700 NP,  TRM41249.00,  12354066,  NONE, 1.1369, 1.1934, 15, 0