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 MM HG 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 1988 336 1986 1979 1971 1970 1986 2001 2013 2013 2002 2016 2014 2022 2026 2017 1999 1990 1984 2007 1986 1984 1994 2000 1997 2007 1998.5 24 2 12 1988 337 1990 2007 1997 1997 2003 1995 2008 2008 2012 1995 2019 2008 2002 2022 2015 2020 1998 1986 2008 1994 2011 2005 2018 2003 2005.0 24 3 12 1988 338 1997 1980 1992 1982 1982 1974 1980 1985 1996 2000 1994 2006 2004 1992 1995 1990 1985 1989 1984 1980 1977 1981 1991 1987 1988.5 24 4 12 1988 339 1992 1990 1975 1975 1985 1978 1971 1996 2001 2000 2002 1994 1994 1980 1994 1990 1976 1970 1986 1974 1982 1963 1978 1985 1984.6 24 5 12 1988 340 1975 1986 1984 1972 1982 1978 1991 1984 1976 1990 1979 1986 1981 1977 1981 1990 1972 1974 1982 1981 1965 1983 1986 1974 1980.4 24 6 12 1988 341 1988 1977 1990 1995 1981 1990 1997 1995 2001 2002 2007 2000 1997 1993 1992 1996 1991 2009 1999 1982 1989 1986 1998 1992 1993.6 24 7 12 1988 342 2006 1999 1991 1996 1986 1992 1993 1995 1996 2012 2011 2010 2002 1994 2000 2000 2008 2006 1995 2007 2013 1994 2000 1996 2000.1 24 8 12 1988 343 2002 2004 2017 1999 2008 1998 1995 2000 2012 2007 2017 2014 2018 2011 2011 1999 1998 2007 2006 2013 2009 2009 2004 2006 2006.8 24 9 12 1988 344 2012 2011 1994 2001 1995 2003 2013 2021 2024 2013 2022 2024 2013 2033 2016 2003 1992 2010 2009 2003 2008 2010 2021 2004 2010.6 24 10 12 1988 345 2003 1993 1999 1996 1984 1989 1990 2006 1999 1982 1998 2018 2017 2021 2027 2028 2008 2010 2006 2005 2018 2008 2001 1995 2004.2 24 11 12 1988 346 1988 2011 1993 1988 1990 1987 1998 2001 2000 1997 1998 2010 2005 1996 1998 2006 2016 1979 1995 1972 1992 1992 1988 1994 1995.6 24 12 12 1988 347 1988 1983 1986 1979 1975 1982 1979 1992 1990 2008 1986 1987 1994 1987 2002 1976 1981 1983 1968 1982 1978 1976 1980 1967 1983.7 24 13 12 1988 348 1983 1976 1968 1958 1946 1970 1971 1977 1962 1985 1966 1971 1981 1971 1980 1975 1959 1965 1965 1969 1972 1989 1973 1991 1971.8 24 14 12 1988 349 1990 1983 2000 1987 1982 1991 0 0 0 1999 1992 1984 1978 1969 1956 1963 1955 1941 1945 1945 1939 1951 1945 1932 1968.0 21 15 12 1988 350 1927 1932 1949 1946 1945 1935 1956 1938 1959 1952 1957 1957 1958 1933 1935 1944 1930 1924 1931 1920 1918 1934 1939 1938 1939.9 24 16 12 1988 351 1944 1932 1944 1925 1937 1955 1935 1934 1949 1947 1933 1934 1923 1942 1942 1959 1933 1938 1939 1936 1931 1957 1931 1933 1938.9 24 17 12 1988 352 1939 1924 1947 1947 1954 1943 1960 1955 1953 1967 1961 1962 1962 1950 1956 1949 1949 1951 1942 1932 1942 1933 1950 1922 1947.9 24 18 12 1988 353 1904 1893 1912 1917 1905 1904 1906 1921 1920 1912 1903 1904 1902 1893 1877 1876 1869 1880 1876 1880 1884 1881 1873 1882 1894.8 24 19 12 1988 354 1910 1909 1906 1910 1913 1912 1917 1887 1886 1908 1879 1896 1906 1902 1917 1920 1914 1928 1920 1909 1911 1932 1933 1926 1910.5 24 20 12 1988 355 1920 1926 1919 1902 1897 1898 1899 1902 1912 1897 1910 1889 1915 1904 1914 1916 1911 1931 1933 1937 1937 1927 1943 1945 1916.0 24 21 12 1988 356 1918 1934 1938 1929 1938 1926 1922 1923 1920 1940 1923 1930 1936 1937 1917 1935 1939 1933 1937 1941 1934 1928 1932 1938 1931.2 24 22 12 1988 357 1927 1931 1923 1928 1941 1933 1937 1944 1933 1942 1942 1946 1961 1950 1953 1960 1964 1971 1962 1974 1956 1958 1964 1953 1948.0 24 23 12 1988 358 1962 1965 1946 1954 1962 1947 1964 1954 1965 1971 1967 1969 1961 1970 1966 1960 1958 1948 1955 1946 1945 1947 1940 1934 1956.5 24 24 12 1988 359 1936 1954 1951 1955 1939 1933 1949 1953 1963 1961 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1949.4 10 25 12 1988 360 0 0 0 0 0 0 0 0 1950 1975 1974 1992 2015 1996 1998 2002 1984 2002 1985 1975 1986 1967 1984 1985 1985.6 16 26 12 1988 361 1989 1966 1959 1964 1957 1966 1968 1972 1974 1995 1975 2000 1988 1996 1998 1988 1979 1980 1979 1976 1972 1949 1937 1947 1973.9 24 27 12 1988 362 1936 1944 1954 1950 1943 1957 1959 1954 1961 1994 1969 1962 1964 1970 1966 1946 1961 1962 1947 1957 1938 1952 1946 1946 1955.8 24 28 12 1988 363 1950 1936 1956 1948 1935 1944 1956 1950 1942 1947 1960 1969 1971 1961 1969 1961 1954 1960 1971 1963 1966 1948 1960 1951 1955.3 24 29 12 1988 364 1944 1943 1955 1947 1948 1957 1952 1945 1954 1966 1968 1983 1980 1960 1954 1963 1958 1952 1946 1957 1956 1959 1956 1953 1956.5 24 30 12 1988 365 1946 1953 1958 1957 1954 1942 1972 1957 1966 1974 1968 1966 1960 1958 1965 1954 1962 1955 1957 1936 1949 1959 1933 1938 1955.8 24 31 12 1988 366 1937 1951 1932 1939 1943 1944 1932 1947 1934 1931 1937 1946 1945 1960 1959 1962 1968 1967 1960 1963 1963 1957 1960 1977 1950.6 24 MONTHLY MEANS 1963 1962 1964 1960 1960 1961 1965 1966 1967 1974 1971 1975 1975 1972 1972 1971 1965 1967 1966 1963 1965 1965 1965 1963 1966.5 C-12