benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 a46x, 2001-09-16,  CWW ,   ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH701945B_M,  CR519992603,  NONE, 1.35, 1.3978, 30, 154730
 a46x, 2001-09-19,  JNA ,   ,  ASHTECH,  lp019992809 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.3267, 1.3748, 30, 1780
 a46x A46_1934_USCGS, 2005-09-14,  GDH ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH701945B_M,  CR619992801,  NONE, 1.2592, 1.3079, 30, 154330
 a46x A46_1934_USCGS, 2005-09-19,  FFP ,  USGS ,  ASHTECH,  LP019992809 ,  Z-XII3 CD00,  ASH701945E_M,  CR520031626,  NONE, 1.1226, 1.1729, 30, 155630
 a46x A46_1934_USCGS, 2010-09-28,  SAH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.3531, 1.4009, 15, 16045