benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 sodh, 1999-09-10,  GWB ,  USGS ,  ASHTECH,  O4597 ,  Z-XII3 CC00,  ASH701945.02B,  CR619992801,  NONE, 0.8088, 0.8647, 30, 10
 sodh, 1999-09-26,  GWB ,  USGS ,  ASHTECH,  278 ,  Z-XII3 CD00,  ASH700936E_C,  CR16379,  NONE, 0.7502, 0.8077, 30, 151130
 sodh Sodh_stmpd_28_STR_19, 2003-06-21,  SAH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.4124, 0.4857, 30, 151630
 sodh Sodh_stmpd_28_STR_19, 2003-06-22,  SAH ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.4124, 0.4857, 30, 10
 sodh Sodh_stmpd_28_STR_19, 2003-06-28,  CWW ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.4706, 0.5399, 30, 15170
 sodh Sodh_stmpd_28_STR_19, 2003-06-29,  CWW ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993702,  NONE, 0.4706, 0.5399, 30, 10
 sodh Sodh_stmpd_28_STR_19, 2008-09-25,  WRT ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.1479, 1.1979, 30, 163320
 sodh Sodh_stmpd_28_STR_19, 2008-10-16,  WRT ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.3046, 1.3529, 30, 1670