benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 g407, 2001-09-18,  WCH ,   ,  ASHTECH,  lp019992803 ,  Z-XII3 CD00,  ASH700936D_M,  CR14341,  NONE, 1.1417, 1.1918, 30, 154530
 g407, 2001-09-26,  GB ,  USGS ,  TRIMBLE,  3608A14594 ,  4000SSI NP,  TRM29659.00,  0220073545,  NONE, 1.3016, 0, 0, 1630
 g407 G407_1945_USCGS, 2006-09-16,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945E_M,  CR520031622,  NONE, 1.1297, 1.18, 30, 15380
 g407 G407_1945_USCGS, 2006-09-24,  BW_ ,  USGS ,  ASHTECH,  LP00108.707 ,  Z-XII3 CD00,  ASH701945E_M,  CR520031615,  NONE, 1.1499, 1.1999, 30, 1620
 g407 G407_1945_USCGS, 2010-09-09,  FFP ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH701945B_M,  CR619992805,  NONE, 1.1631, 1.2129, 15, 152645
 g407 G407_1945_USCGS, 2010-09-26,  SAH ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH701945E_M,  CR620022602,  NONE, 1.159, 1.2089, 15, 16315