benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 3751 020_LAK_37.51_CalTra, 2007-08-21,  CHS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH701945B_M,  CR619992805,  NONE, 1.5114, 1.5579, 30, 15300
 3751 020_LAK_37.51_CalTra, 2007-08-22,  JMS ,  USGS ,  ASHTECH,  ZE1200526043 ,  Z-X ZE21,  ASH701945B_M,  CR519993703,  NONE, 1.5457, 1.592, 30, 16220
 3751 020_LAK_37.51_CalTra, 2009-02-20,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR620022601,  NONE, 1.4126, 1.4599, 30, 16350
 3751 020_LAK_37.51_CalTra, 2009-02-21,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH701945E_M,  CR620022601,  NONE, 1.3925, 1.44, 30, 1680
 3751 020_LAK_37.51_CalTra, 2011-05-12,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE210,  ASH701945B_M,  CR519993702,  NONE, 1.6413, 1.6869, 15, 153345
 3751 020_LAK_37.51_CalTra, 2011-05-14,  JMS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE210,  ASH700936D_M,  CR14330,  NONE, 1.589, 1.6349, 15, 153115
 3751 020_LAK_37.51_CalTra, 2013-05-22,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14341,  NONE, 1.5688, 1.6149, 15, 172015
 3751 020_LAK_37.51_CalTra, 2013-06-06,  JLS ,  USGS ,  JAVAD,  00620 ,  TRE_G3TH SIGMA3.3.1,  ASH701945B_M,  CR519993703,  NONE, 1.243, 1.2919, 15, 145315