benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 schr, 2002-07-30,  SDM ,  USC ,  ASHTECH Z-XII3,  278,  CD00,  ASH700936E_C,  381,  NONE, 0.5825, 0.6459, 30, 3930
 schr, 2002-07-31,  SDM ,  USC ,  ASHTECH Z-XII3,  278,  CD00,  ASH700936E_C,  381,  NONE, 0.5825, 0.6459, 30, 10
 schr, 2010-07-23,  JMS ,  USGS ,  TRIMBLE,  0220320205 ,  5700 NP,  TRM41249.00,  12560609,  NONE, 0.6317, 0.697, 15, 163315
 schr, 2010-07-24,  JMS ,  USGS ,  TRIMBLE,  0220320205 ,  5700 NP,  TRM41249.00,  12560609,  NONE, 0.6317, 0.697, 15, 30