benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 g326, 2001-09-11,  GB ,  USGS ,  TRIMBLE,  3608A14630 ,  4000SSI NP,  TRM29659.00,  0220073540,  NONE, 1.2409, 0, 0, 15500
 g326, 2001-09-22,  CHS ,   ,  ASHTECH,  lp020000801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.2489, 1.2977, 30, 15430
 g326 G326_1934_StateHwyDe, 2005-09-25,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 1.2228, 1.2719, 30, 15320