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58 8 58 9 59 0 59 1 59 2 59 3 59 4 59 5 59 6 59 7 59 8 59 9 60 0 60 1 60 2 60 3 60 4 60 5 60 6 60 7 60 8 60 9 61 0 61 1 61 2 61 3 61 4 61 5 61 6 61 7 61 8 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid