benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 mldu, 2000-07-13,  MPP ,  USC ,  ASHTECH Z-XII3,  278,  CD00,  ASH700936E_C,  365,  NONE, 0.3797, 0.4558, 30, 4330
 mldu, 2010-07-21,  JMS ,  USGS ,  TRIMBLE,  0220316049 ,  5700 NP,  TRM41249.00,  60074027,  NONE, 0.4641, 0.5361, 15, 30
 mldu, 2010-07-22,  JMS ,  USGS ,  TRIMBLE,  0220316049 ,  5700 NP,  TRM41249.00,  60074027,  NONE, 0.4641, 0.5361, 15, 30