benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 b407, 2001-09-12,  WCH ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.5022, 1.5488, 30, 153730
 b407, 2001-09-18,  CHS ,   ,  ASHTECH,  lp020000801 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993702,  NONE, 1.3863, 1.4338, 30, 15290
 b407 407_ODOT, 2005-09-17,  MAB ,  USGS ,  ASHTECH,  579 ,  Z-XII3 CD00,  ASH701945B_M,  CR519993703,  NONE, 1.4449, 1.4919, 30, 155930
 b407 407_ODOT, 2005-09-22,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14333,  NONE, 1.4348, 1.4819, 30, 152130
 b407 407_ODOT, 2010-09-17,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.5124, 1.5589, 15, 154545
 b407 407_ODOT, 2010-09-18,  JMS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE210,  ASH701945E_M,  CR620022601,  NONE, 1.4419, 1.4889, 15, 15645