benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 k138 K1383_1986_NGS, 2006-07-18,  JMS ,  USGS ,  ASHTECH,  ZE1200331018 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.342, 1.3899, 30, 154130
 k138 K1383_1986_NGS, 2006-07-19,  CHS ,  USGS ,  ASHTECH,  ZE1200331006 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.3945, 1.4419, 30, 15360