COSMIC RAY RESEARCH UNIT, POTCHEFSTROOM UNIVERSITY, POTCHEFSTROOM IGY NEUTRON MONITOR, POTCHEFSTROOM, SOUTH AFRICA COORDINATES 26 41 S, 27 06 E ALTITUDE 1351 METERS REAL COUNTS 100 TIMES TABULATED VALUES CORRECTED TO 652.4 CO-EFFICIENT 0.9900 PERCENT/MM HG DATE DAY UT 01 02 03 04 05 06 07 08 09 10 11 12 DAILY MEANS 13 14 15 16 17 18 19 20 21 22 23 24 1 12 2001 335 1955 1954 1953 1947 1963 1958 1957 1959 1949 1955 1952 1956 1960 1948 1960 1954 1959 1951 1969 1943 1931 1932 1954 1954 1953.0 24 2 12 2001 336 1949 1948 1951 1965 1950 1958 1945 1956 1948 1945 1963 1942 1959 1954 1952 1959 1952 1963 1958 1955 1968 1952 1947 1965 1954.3 24 3 12 2001 337 1966 1943 1962 1946 1952 1957 1948 1951 1945 1953 1949 1961 1949 1956 1941 1947 1957 1954 1934 1959 1945 1913 1911 1905 1946.0 24 4 12 2001 338 1914 1922 1927 1924 1922 1931 1928 1923 1920 1920 1919 1921 1942 1930 1933 1922 1926 1900 1904 1903 1905 1900 1920 1898 1918.9 24 5 12 2001 339 1905 1910 1912 1921 1919 1925 1928 1906 1930 1940 1936 1929 1939 1917 1923 1909 1908 1905 1906 1906 1905 1900 1898 1900 1915.7 24 6 12 2001 340 1905 1911 1923 1918 1909 1916 1903 1910 1906 1894 1905 1917 1916 1908 1905 1912 1917 1910 1910 1901 1898 1890 1918 1909 1908.8 24 7 12 2001 341 1904 1899 1916 1895 1909 1906 1898 1899 1897 1901 1924 1919 1919 1926 1913 1916 1920 1933 1913 1910 1926 1915 1908 1906 1911.3 24 8 12 2001 342 1929 1934 1922 1918 1926 1919 1928 1916 1936 1934 1922 1937 1931 1943 1928 1933 1930 1919 1921 1927 1925 1920 1920 1935 1927.2 24 9 12 2001 343 1922 1937 1926 1927 1946 1919 1933 1935 1930 1943 1931 1944 1932 1954 1948 1929 1932 1932 1935 1946 1940 1947 1934 1964 1936.9 24 10 12 2001 344 1955 1954 1962 1947 1944 1958 1947 1954 1940 1939 1956 1947 1951 1947 1937 1952 1936 1934 1952 1944 1955 1954 1952 1955 1948.8 24 11 12 2001 345 1948 1952 1941 1975 1951 1946 1963 1960 1966 1960 1952 1959 1967 1964 1962 1954 1938 1952 1965 1956 1958 1946 1962 1963 1956.7 24 12 12 2001 346 1953 1942 1949 1961 1958 1969 1957 1972 1965 1976 1964 1962 1970 1996 1973 1997 1991 1976 1970 1968 1971 1975 1954 1970 1968.3 24 13 12 2001 347 1977 1966 1977 1980 1962 1975 1970 1993 1969 1984 1986 1971 1984 1970 1962 1972 1969 1962 1969 1969 1951 1969 1975 1975 1972.4 24 14 12 2001 348 1973 1957 1976 1962 1949 1974 1956 1981 1975 1966 1987 1971 1970 1978 1979 1981 1983 1982 1984 1980 1984 1974 1968 1981 1973.8 24 15 12 2001 349 1973 1985 1980 1974 1965 1959 1957 1964 1976 1976 1961 1973 1986 1973 1963 1952 1950 1952 1938 1922 1906 1926 1921 1939 1957.1 24 16 12 2001 350 1923 1946 1938 1917 1918 1920 1925 1929 1940 1941 1942 1939 1940 1938 1953 1935 1937 1925 1909 1914 1897 1889 1912 1904 1926.3 24 17 12 2001 351 1897 1894 1899 1919 1896 1904 1917 1914 1917 1918 1917 1924 1926 1908 1917 1930 1931 1940 1931 1926 1925 1917 1909 1920 1916.5 24 18 12 2001 352 1912 1903 1903 1896 1922 1918 1932 1940 1924 1940 1920 1915 1935 1932 1926 1945 1934 1931 1930 1934 1933 1942 1936 1936 1926.6 24 19 12 2001 353 1944 1932 1946 1934 1953 1943 1945 1946 1939 1955 1957 1936 1943 1930 1941 1948 1944 1938 1950 1940 1956 1957 1953 1962 1945.5 24 20 12 2001 354 1964 1950 1954 1959 1951 1956 1962 1948 1952 1949 1973 1953 1964 1949 1966 1952 1958 1956 1952 1951 1952 1947 1959 1959 1955.7 24 21 12 2001 355 1953 1953 1951 1944 1955 1938 1950 1953 1962 1959 1971 1974 1958 1973 1965 1958 1979 1967 1970 1968 1971 1964 1980 1986 1962.6 24 22 12 2001 356 1978 1958 1967 1964 1961 1957 1954 1958 1968 1961 1979 1956 1965 1964 1968 1956 1964 1970 1958 1944 1946 1962 1963 1951 1961.3 24 23 12 2001 357 1955 1966 1966 1951 1956 1955 1960 1955 1963 1969 1972 1976 1977 1970 1974 1977 1952 1966 1962 1948 1951 1954 1963 1961 1962.5 24 24 12 2001 358 1938 1948 1945 1954 1959 1964 1956 1972 1966 1967 1984 1980 1980 1983 1990 1990 1977 1987 1963 1969 1983 1961 1971 1956 1968.5 24 25 12 2001 359 1962 1968 1961 1965 1957 1965 1962 1983 1978 1973 1968 1969 1977 1986 1962 1971 1960 1957 1953 1958 1944 1943 1947 1964 1963.9 24 26 12 2001 360 1955 1946 1960 1957 1966 1961 1977 1968 1970 1971 1971 1971 1977 1966 1961 1967 1953 1954 1960 1949 1955 1947 1956 1956 1961.4 24 27 12 2001 361 1955 1941 1950 1947 1963 1958 1947 1968 1968 1970 1975 1967 1970 1965 1957 1946 1959 1966 1945 1953 1959 1954 1962 1949 1958.1 24 28 12 2001 362 1969 1958 1964 1960 1958 1968 1955 1972 1972 1934 1939 1958 1943 1946 1949 1949 1955 1953 1953 1954 1948 1955 1939 1952 1954.3 24 29 12 2001 363 1960 1941 1942 1946 1931 1940 1917 1908 1913 1927 1911 1903 1922 1916 1919 1916 1910 1919 1920 1917 1911 1931 1925 1924 1923.7 24 30 12 2001 364 1921 1937 1943 1957 1947 1951 1952 1944 1943 1949 1951 1959 1946 1945 1961 1959 1979 1964 1959 1946 1945 1908 1930 1918 1946.4 24 31 12 2001 365 1904 1909 1903 1928 1917 1897 1883 1895 1885 1893 1872 1900 1898 1896 1901 1884 1896 1882 1890 1864 1863 1862 1851 0 1890.1 23 MONTHLY MEANS 1943 1941 1944 1944 1943 1944 1942 1946 1946 1947 1949 1948 1951 1949 1948 1947 1947 1945 1943 1939 1939 1936 1939 1944 1944.4 C-12