benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 u067, 1999-09-19,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 0.6, 0.6626, 30, 153030
 u067, 1999-09-23,  JJB ,   ,  ASHTECH,  192 ,  Z-XII3 CD00,  ASH700936D_M,  CR14333,  NONE, 0.6697, 0.7297, 30, 15300
 u067 U067_U67_1934_USC&GS, 2008-09-18,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.4211, 0.4938, 30, 0
 u067 U067_U67_1934_USC&GS, 2008-09-19,  JMS ,  USGS ,  ASHTECH,  ZE120023202 ,  Z-X ZE21,  ASH700936D_M,  CR14341,  NONE, 0.4211, 0.4938, 30, 0
 u067 U067_U67_1934_USC&GS, 2013-09-15,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14244,  NONE, 0.6699, 0.7298, 15, 0
 u067 U067_U67_1934_USC&GS, 2013-09-16,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE210,  ASH700936D_M,  CR14244,  NONE, 0.6699, 0.7298, 15, 0