benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 croc CROC_2005_USGS, 2005-10-27,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.494, 0.5618, 30, 0
 croc CROC_2005_USGS, 2005-10-28,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.494, 0.5618, 30, 0
 croc CROC_2005_USGS, 2005-10-29,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 0.494, 0.5618, 30, 0
 croc CROC_2005_USGS, 2006-08-18,  GDH ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR520031622,  NONE, 0.5205, 0.5868, 30, 30
 croc CROC_2005_USGS, 2006-11-17,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.2278, 1.2769, 30, 0
 croc CROC_2005_USGS, 2006-11-18,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.2278, 1.2769, 30, 0
 croc CROC_2005_USGS, 2006-11-19,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945E_M,  CR620022602,  NONE, 1.2278, 1.2769, 30, 0
 croc CROC_2005_USGS, 2008-07-12,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.1823, 1.2319, 30, 172930
 croc CROC_2005_USGS, 2008-07-13,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.1823, 1.2319, 30, 0
 croc CROC_2005_USGS, 2008-07-14,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.1823, 1.2319, 30, 0
 croc CROC_2005_USGS, 2008-07-15,  CHS ,  USGS ,  ASHTECH,  ZE120023208 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.1823, 1.2319, 30, 0
 croc CROC_2005_USGS, 2009-08-13,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.2197, 1.2688, 30, 171930
 croc CROC_2005_USGS, 2009-08-14,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.2197, 1.2688, 30, 0
 croc CROC_2005_USGS, 2009-08-15,  CHS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945E_M,  CR620022605,  NONE, 1.2197, 1.2688, 30, 0
 croc CROC_2005_USGS, 2010-07-21,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.2865, 1.3349, 15, 0
 croc CROC_2005_USGS, 2010-07-22,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.2865, 1.3349, 15, 0