benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 elgn, 2001-09-17,  WCH ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2176, 1.2668, 30, 155830
 elgn, 2001-09-22,  APS ,   ,  ASHTECH,  04597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993706,  NONE, 1.2651, 1.3138, 30, 155730
 elgn E_USGS, 2005-09-12,  MAB ,  USGS ,  ASHTECH,  579 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.4025, 1.4499, 30, 162930
 elgn E_USGS, 2006-09-14,  FFP ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.5054, 1.5519, 30, 15590
 elgn E_USGS, 2006-09-15,  FFP ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR620022601,  NONE, 1.34, 1.3879, 30, 154630
 elgn E_USGS, 2010-09-12,  FFP ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.2339, 1.2829, 15, 163815