benchmark, date, observer, organization, receiver, receiver_sn, receiver_type, antenna, antenna_sn, dome, height (m), slant height (m), interval, first_observation (s)
 knlx Knoll_1945_USGS, 1994-03-19,  CHS ,  USGS ,  ASHTECH,  762 ,  LM-XII3 7A,  ASH700228A,  0745,  NONE, 0.4786, 0.5473, 30, 172930
 knlx Knoll_1945_USGS, 2006-04-26,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE21,  ASH700936A_M,  11477,  NONE, 0.4812, 0, 30, 0
 knlx Knoll_1945_USGS, 2006-04-27,  JMS ,  USGS ,  ASHTECH,  ZE120033802 ,  Z-X ZE21,  ASH700936A_M,  11477,  NONE, 0.4812, 0, 30, 0