benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 laur Laurel_1933_USC&GS, 1994-07-16,  JMS ,  USGS ,  ASHTECH,  765 ,  LM-XII3 7A,  ASH700228D,  1058,  NONE, 0.5897, 0.6527, 30, 17360
 laur Laurel_1933_USC&GS, 2010-07-18,  JMS ,  USGS ,  TRIMBLE,  0220320135 ,  5700 NP,  TRM41249.00,  12560557,  NONE, 0.5935, 0.6601, 15, 183930
 laur Laurel_1933_USC&GS, 2010-07-19,  JMS ,  USGS ,  TRIMBLE,  0220320135 ,  5700 NP,  TRM41249.00,  12560557,  NONE, 0.5935, 0.6601, 15, 30
 laur Laurel_1933_USC&GS, 2010-07-20,  JMS ,  USGS ,  TRIMBLE,  0220320135 ,  5700 NP,  TRM41249.00,  12560557,  NONE, 0.5935, 0.6601, 15, 30