benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 y27x, 2001-09-22,  TD ,  USGS ,  TRIMBLE,  3608A14632 ,  4000SSI NP,  TRM29659.00,  0220089288,  NONE, 1.3657, 0, 0, 15420
 y27x Y27_1933_USC&GS, 2006-09-12,  CMH ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.1762, 1.2259, 30, 15570
 y27x, 2006-09-19,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH701945E_M,  CR520031626,  NONE, 1.3586, 1.4064, 30, 16240
 y27x Y27_1933_USC&GS, 2006-09-23,  BW_ ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR520031615,  NONE, 1.1843, 1.2338, 30, 1620