benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 13do 13DOR_1975_USGS, 2006-07-11,  GDH ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.2481, 1.2969, 30, 152530
 13do 13DOR_1975_USGS, 2006-07-12,  JMS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.3208, 1.3689, 30, 15250