benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 bisc, 2000-09-14,  FFP ,  USGS ,  ASHTECH Z-XII3,  O4579,  CC00,  ASH701945B_M,  CR519993702,  NONE, 1.1163, 1.1667, 30, 17930
 bisc, 2000-09-20,  APS ,   ,  ASHTECH Z-XII3,  174,  CD00,  ASH700936D_M,  CR14330,  NONE, 1.3116, 1.3598, 30, 1640
 bisc, 2004-09-18,  WCH ,  USGS ,  ASHTECH Z-XII3,  LP019992803,  CD00,  ASH701945E_M,  CR620022602,  NONE, 1.3258, 1.3738, 30, 16430
 bisc, 2004-09-20,  RWB ,  USGS ,  TRIMBLE 4000SSI,  21140,  NP,  TRM29659.00,  05208,  NONE, 1.3445, 0, 0, 155430
 bisc BISC_USGS, 2009-11-15,  JMS ,  USGS ,  ASHTECH Z-X,  ZE1200331017,  ZE210A13,  ASH700936D_M,  CR14333,  NONE, 0.8376, 0.8929, 30, 164645
 bisc BISC_USGS, 2009-11-16,  JMS ,  USGS ,  ASHTECH Z-X,  ZE1200331017,  ZE210A13,  ASH700936D_M,  CR14333,  NONE, 0.8376, 0.8929, 30, 0