benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 c344, 1994-07-01,  unknown ,  NGS ,  TRIMBLE 4000SST,  482,  4.81,  TRM14532.00,  20,  NONE, 2.22, 0, 15, 165545
 c344, 1994-07-06,  unknown ,  NGS ,  TRIMBLE 4000SST,  482,  4.81,  TRM14532.00,  20,  NONE, 2.22, 0, 15, 163345
 c344, 2000-09-16,  APS ,   ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14330,  NONE, 1.3146, 1.3628, 30, 15590
 c344, 2000-09-23,  WRT ,   ,  ASHTECH,  lp019992805 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2378, 1.2868, 30, 1640
 c344, 2004-09-25,  WCH ,  USGS ,  ASHTECH,  LP019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.2167, 1.2659, 30, 110
 c344, 2004-09-27,  RWB ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993706,  NONE, 1.245, 1.2939, 30, 15230
 c344 C344_1953_USCGS, 2009-09-17,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 1.3521, 1.3999, 30, 15350
 c344 C344_1953_USCGS, 2009-09-20,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR520031626,  NONE, 1.3551, 1.4029, 30, 14500