=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-FEB-97 :
Data for 1951, 1977, 1987, 1993 and 1994 revised in February 1997
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 2000Mar03 :
Kolobrzeg           110/072 RLR(1997) is 2.001m below BM iron bolt Last data for Kolobrzeg is 1999 due to data policy issues in Poland

