=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991 Qinhuangdao 610/039 RLR(1980) is 11.4m below BM(1965.7) =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 14-Jul-1993 High value for August 1959 and low value for January 1963 noted but no explanation available =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-Oct-1993 December 1981 value low, queried with authority Qinhuangdao is an historic station last data 1994