benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 idt3, 2001-09-13,  FFP ,   ,  ASHTECH,  lp019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14329,  NONE, 1.0352, 1.0868, 30, 152930
 idt3, 2001-09-22,  JNA ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.2136, 1.2628, 30, 152430
 idt3 IDTD_3_NMDS_GPS_1994, 2005-09-15,  MCN ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH700936D_M,  CR14341,  NONE, 1.247, 1.2959, 30, 171530
 idt3 IDTD_3_NMDS_GPS_1994, 2006-09-14,  CMH ,  USGS ,  ASHTECH,  LP019992804 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.2046, 1.2539, 30, 155930
 idt3 IDTD_3_NMDS_GPS_1994, 2010-09-20,  CHS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.2824, 1.3309, 15, 0