benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 crts, 1999-09-17,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 0.7451, 0.8027, 30, 20
 crts, 1999-09-20,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 0.5812, 0.6446, 30, 173130
 crts, 1999-09-21,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 0.5812, 0.6446, 30, 30
 crts, 2003-06-24,  SAH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.3453, 0.4248, 30, 15170
 crts, 2003-06-25,  SAH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.3453, 0.4248, 30, 10
 crts, 2003-06-26,  SAH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.3453, 0.4248, 30, 10
 crts Crts_1965_USC&GS, 2008-09-06,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 0.407, 0.4808, 30, 15230
 crts Crts_1965_USC&GS, 2008-09-07,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 0.407, 0.4808, 30, 0
 crts Crts_1965_USC&GS, 2008-09-08,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 0.407, 0.4808, 30, 0
 crts Crts_1965_USC&GS, 2008-09-09,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 0.407, 0.4808, 30, 0