benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 whc2, 2001-09-08,  CHS ,   ,  ASHTECH,  lp020000801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.477, 1.5238, 30, 15300
 whc2, 2001-09-14,  APS ,   ,  ASHTECH,  04597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993706,  NONE, 1.253, 1.3018, 30, 155030
 whc2 WHC2_ODOT, 2005-09-12,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 1.4207, 1.4679, 30, 16160
 whc2 WHC2_ODOT, 2005-09-17,  HRY ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH701945E_M,  CR520031622,  NONE, 1.4187, 1.4659, 30, 155630
 whc2 WHC2_ODOT, 2010-09-21,  WRT ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.3854, 1.4329, 15, 165345
 whc2 WHC2_ODOT, 2010-10-04,  WRT ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 1.3198, 1.3679, 15, 175345