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 2002 335 1929 1914 1916 1921 1915 1925 1918 1920 1929 1923 1922 1925 1928 1943 1944 1945 1930 1928 1928 1924 1932 1923 1912 1926 1925.8 24 2 12 2002 336 1932 1919 1920 1927 1926 1925 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1924.8 6 3 12 2002 337 1931 1926 1931 1949 1923 1926 1947 1939 1956 1944 1944 1930 1944 1939 1951 1945 1949 1939 1948 1948 1946 1934 1950 1930 1940.4 24 4 12 2002 338 1940 1930 1940 1944 1925 1957 1932 1950 1957 1949 1943 1943 1956 1948 1940 1952 1959 1958 1956 1956 1969 1945 1949 1946 1947.7 24 5 12 2002 339 1951 1934 1938 1937 1941 1940 1929 1941 1948 1953 1961 1935 1936 1957 1956 1953 1948 1950 1948 1945 1945 1931 1938 1946 1944.2 24 6 12 2002 340 1931 1939 1937 1926 1917 1928 1924 1917 1945 1940 1935 1928 1928 1950 1929 1934 1926 1928 1923 1945 1936 1919 1922 1929 1930.7 24 7 12 2002 341 1915 1916 1925 1922 1913 1911 1921 1920 1913 1944 1935 1934 1930 1913 1919 1933 1906 1907 1915 1898 1914 1910 1909 1896 1917.5 24 8 12 2002 342 1887 1900 1889 1896 1893 1905 1910 1908 1905 1894 1916 1914 1897 1912 1922 1911 1907 1898 1902 1899 1907 1893 1906 1890 1902.5 24 9 12 2002 343 1907 1892 1893 1899 1908 1900 1901 1903 1901 1908 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1901.2 10 10 12 2002 344 1905 1892 1912 1909 1893 1909 1913 1905 1913 1906 1907 1920 1926 1915 1919 1915 1918 1908 1913 1916 1909 1925 1915 1931 1912.2 24 11 12 2002 345 1908 1918 1915 1919 1903 1911 1912 1917 1927 1919 1923 1915 1913 1911 1912 1919 1916 1921 1911 1924 1912 1919 1920 1918 1916.0 24 12 12 2002 346 1922 1922 1918 1923 1915 1914 1907 1935 1913 1923 1921 1920 1916 1910 1922 1922 1909 1927 1908 1908 1916 1923 1910 1903 1917.0 24 13 12 2002 347 1921 1917 1910 1929 1916 1925 1912 1911 1922 1910 1924 1917 1897 1907 1910 1899 1916 1894 1904 1900 1893 1903 1916 1914 1911.1 24 14 12 2002 348 1908 1900 1911 1908 1908 1910 1902 1887 1901 1902 1890 1887 1885 1882 1878 1890 1886 1889 1889 1867 1888 1887 1886 1891 1893.0 24 15 12 2002 349 1901 1884 1895 1902 1888 1898 1904 1886 1898 1903 1898 1902 1898 1894 1895 1898 1885 1884 1888 1897 1897 1891 1893 1907 1895.2 24 16 12 2002 350 1900 1907 1909 1912 1907 1904 1892 1902 1911 1901 1898 1905 1901 1913 1895 1910 1892 1899 1886 1899 1893 1905 1896 1901 1901.6 24 17 12 2002 351 1894 1893 1892 1885 1892 1904 1903 1905 1909 1910 1929 1924 1913 1927 1912 1922 1909 1893 1918 1895 1889 1881 1885 1882 1902.7 24 18 12 2002 352 1882 1873 1882 1875 1879 1880 1877 1886 1882 1874 1880 1881 1877 1890 1896 1878 1886 1882 1882 1886 1875 1879 1901 1887 1882.1 24 19 12 2002 353 1888 1891 1896 1894 1899 1890 1891 1883 1889 1876 1907 1890 1905 1894 1897 1898 1909 1910 1895 1899 1879 1900 1884 1879 1893.5 24 20 12 2002 354 1890 1888 1891 1880 1879 1905 1896 1890 1884 1888 1898 1894 1894 1889 1893 1887 1890 1886 1896 1903 1887 1882 1890 1879 1890.0 24 21 12 2002 355 1894 1905 1893 1896 1890 1888 1900 1898 1896 1898 1904 1894 1899 1900 1896 1902 1902 1892 1897 1900 1899 1899 1909 1912 1898.5 24 22 12 2002 356 1894 1895 1899 1904 1915 1895 1896 1895 1898 1889 1896 1893 1898 1891 1899 1895 1882 1864 1869 1854 1854 1861 1853 1848 1884.9 24 23 12 2002 357 1849 1854 1844 1856 1859 1862 1852 1865 1870 1867 1875 1891 1878 1874 1867 1854 1866 1867 1870 1868 1865 1863 1863 1874 1864.7 24 24 12 2002 358 1869 1881 1884 1881 1879 1873 1873 1871 1873 1890 1880 1884 1882 1880 1888 1881 1875 1899 1886 1882 1868 1882 1865 1852 1878.2 24 25 12 2002 359 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.0 0 26 12 2002 360 1876 1873 1876 1885 1881 1892 1891 1903 1889 1899 1898 1901 1899 1898 1920 1926 1899 1912 1892 1914 1898 1891 1888 1892 1895.5 24 27 12 2002 361 1901 1903 1908 1901 1901 1891 1878 1893 1911 1906 1906 1910 1919 1936 1908 1913 1917 1920 1919 1906 1906 1916 1893 1915 1907.4 24 28 12 2002 362 1900 1894 1882 1905 1904 1897 1914 1914 1917 1912 1916 1910 1910 1905 1911 1905 1918 1905 1916 1931 1907 1900 1919 1911 1908.5 24 29 12 2002 363 1908 1913 1900 1908 1923 1919 1915 1911 1919 1913 1921 1921 1937 1927 1924 1916 1935 1915 1914 1929 1915 1914 1909 1903 1917.0 24 30 12 2002 364 1913 1909 1919 1918 1925 1930 1938 1938 1924 1936 1942 1932 1931 1930 1926 1924 1928 1934 1931 1925 1916 1918 1916 1931 1926.4 24 31 12 2002 365 1931 1936 1933 1941 1938 1940 1952 1937 1936 1936 1934 1942 1953 1930 1939 1948 1933 1944 1936 1928 1936 1934 1939 1946 1938.4 24 MONTHLY MEANS 1906 1904 1905 1908 1905 1908 1907 1908 1912 1911 1914 1912 1913 1913 1913 1913 1911 1909 1909 1909 1905 1905 1905 1905 1908.7 C-12