benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 sslw, 2001-09-18,  unknown ,  CVO ,  TRIMBLE,  220190410 ,  4700 NP,  TRM29659.00,  220214111,  NONE, 1.2429, 0, 30, 440
 sslw, 2001-09-19,  unknown ,  CVO ,  TRIMBLE,  220190410 ,  4700 NP,  TRM29659.00,  220214111,  NONE, 1.2429, 0, 30, 29.994