benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 f179 179FMK_1975_USGS, 2007-04-10,  CHS ,  USGS ,  ASHTECH,  ZE120023204 ,  Z-X ZE21,  ASH700936D_M,  CR14329,  NONE, 1.2925, 1.3409, 30, 15150
 f179 179FMK_1975_USGS, 2007-04-11,  JMS ,  USGS ,  ASHTECH,  ZE1200331017 ,  Z-X ZE21,  ASH700936D_M,  CR14244,  NONE, 1.345, 1.3929, 30, 15510