benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 fraz, 1999-09-11,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 0.8599, 0.9147, 30, 16360
 fraz, 1999-09-27,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 0.7543, 0.8116, 30, 155630
 fraz, 2003-06-21,  Poland ,  USGS/Cascades Volcan,  TRIMBLE,  14804 ,  4000SSI NP,  TRM29659.00,  66915,  NONE, 0.9334, 0, 30, 144830
 fraz, 2003-06-25,  Poland ,  USGS/Cascades Volcan,  TRIMBLE,  14804 ,  4000SSI NP,  TRM29659.00,  66593,  NONE, 0.935, 0, 30, 144830