benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 dark, 2001-09-14,  JMS ,   ,  ASHTECH,  04582 ,  Z-XII3 CD00,  ASH701945B_M,  CR619992805,  NONE, 1.2833, 1.3318, 30, 15530
 dark, 2001-09-23,  CWW ,   ,  ASHTECH,  02270 ,  Z-XII3 CC00,  ASH701945B_M,  CR519992603,  NONE, 1.2378, 1.2868, 30, 15430
 dark Dark_USGS, 2005-09-18,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR519993706,  NONE, 1.2481, 1.2969, 30, 16410
 dark Dark_USGS, 2006-09-13,  WRT ,  USGS ,  ASHTECH,  LP03360 ,  Z-XII3 CC00,  ASH701945B_M,  CR519993703,  NONE, 1.3147, 1.3629, 30, 30
 dark Dark_USGS, 2006-09-17,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 0.383, 0.4589, 30, 560
 dark Dark_USGS, 2010-09-24,  SAH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.2481, 1.2969, 15, 16145
 dark Dark_USGS, 2010-09-25,  WRT ,  USGS ,  ASHTECH,  ZE1200526028 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.2652, 1.3139, 15, 4545