benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 02ss HPGN_02SS, 1999-07-27,  UC BERKELEY ,   ,  TRIMBLE 4000SSI,  16106,  7.29,  TRM29659.00,  66597,  NONE, 1.5486, 0, 30, 171130
 02ss HPGN_02SS, 1999-07-28,  UC BERKELEY ,   ,  TRIMBLE 4000SSI,  14631,  7.29,  TRM29659.00,  73545,  NONE, 1.1852, 0, 30, 162830
 02ss HPGN_02SS, 1999-07-29,  UC BERKELEY ,   ,  TRIMBLE 4000SSI,  16301,  7.29,  TRM29659.00,  66596,  NONE, 1.3851, 0, 30, 1650
 02ss HPGN_02SS, 2003-06-16,  ETE ,  USGS CVO ,  ASHTECH,  LP019992604 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993302,  NONE, 1.4499, 1.4969, 30, 143730
 02ss HPGN_02SS, 2003-06-22,  ETE ,  USGS CVO ,  ASHTECH,  LP019992604 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993302,  NONE, 1.346, 1.3939, 30, 143130