benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 artp, 2009-07-24,  BH ,  WWU ,  TRIMBLE 5700,  0220291998,  NP,  TRM41249.00,  12345,  NONE, 0.6118, 0.6778, 15, 4830
 artp, 2015-07-14,  MEYERS ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00483,  SIGMA3.6.2,  TRM57971.00,  1441009066,  NONE, 0.462, 0.5341, 15, 3715
 artp, 2015-07-15,  MEYERS ,  USGS/Cascades Volcan,  JAVAD TRE_G3TH,  00483,  SIGMA3.6.2,  TRM57971.00,  1441009066,  NONE, 0.462, 0.5341, 15, 0