benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 crtr Crtr_USGS, 2002-03-06,  JMS ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993706,  NONE, 1.3703, 1.4179, 30, 5230
 crtr Crtr_USGS, 2002-03-07,  JMS ,  USGS ,  ASHTECH,  04597 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993706,  NONE, 1.3703, 1.4179, 30, 10
 crtr Crtr_USGS, 2006-04-20,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  AOAD/M_T,  JPL432,  NONE, 1.2602, 0, 30, 30
 crtr Crtr_USGS, 2006-04-21,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  AOAD/M_T,  JPL432,  NONE, 1.2592, 0, 30, 30
 crtr Crtr_USGS, 2006-04-22,  JMS ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  AOAD/M_T,  JPL432,  NONE, 1.2582, 0, 30, 30
 crtr Crtr_USGS, 2011-07-12,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.6305, 0.6918, 15, 0
 crtr Crtr_USGS, 2011-07-13,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.6305, 0.6918, 15, 0
 crtr Crtr_USGS, 2011-07-14,  JMS ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14329,  NONE, 0.6305, 0.6918, 15, 0