benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 bark, 1998-09-11,  SCOTT M WENDLING ,  GEOLINE POSITIONING ,  TRIMBLE 4000SSI,  3529A11717,  Nav,  TRM22020.00+GP,  0220066029,  NONE, 1.5197, 0, 15, 133815
 bark, 1998-09-14,  SCOTT M WENDLING ,  GEOLINE POSITIONING ,  TRIMBLE 4000SSI,  3529A11717,  Nav,  TRM22020.00+GP,  0220066029,  NONE, 1.4945, 0, 15, 172030
 bark, 1998-09-15,  SCOTT M WENDLING ,  GEOLINE POSITIONING ,  TRIMBLE 4000SSI,  3529A11717,  Nav,  TRM22020.00+GP,  0220066029,  NONE, 1.5288, 0, 15, 132330
 bark, 2001-09-12,  CWW ,   ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH701945B_M,  CR519992603,  NONE, 1.466, 1.5129, 30, 15550
 bark, 2001-09-17,  JMS ,  USGS ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 1.3984, 1.4458, 30, 16380
 bark Barkley_1989_ODOT, 2005-09-10,  GDH ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH701945E_M,  CR520031615,  NONE, 1.2976, 1.3459, 30, 162830
 bark Barkley_1989_ODOT, 2005-09-20,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.4288, 1.476, 30, 15570
 bark Barkley_1989_ODOT, 2010-09-15,  JLS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE210,  ASH700936D_M,  CR14333,  NONE, 1.2743, 1.3229, 15, 134915
 bark Barkley_1989_ODOT, 2010-09-16,  JMS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 1.5346, 1.5809, 15, 155715