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 1991 335 1914 1902 1889 1906 1920 1900 1905 1912 1900 1916 1910 1919 1922 1917 1910 1898 1909 1912 1919 1913 1914 1904 1902 1894 1908.6 24 2 12 1991 336 1902 1912 1900 1910 1897 1897 1908 1908 1904 1905 1920 1907 1896 1913 1922 1898 1919 1895 1893 1894 1897 1892 1892 1894 1903.1 24 3 12 1991 337 1891 1887 1894 1902 1891 1885 1894 1889 1886 1891 1887 1899 1896 1884 1884 1907 1897 1893 1895 1884 1888 1891 1884 1879 1890.8 24 4 12 1991 338 1895 1896 1878 1877 1884 1885 0 1874 1881 1885 1890 1893 1903 1906 1905 1880 1891 1886 1877 1893 1883 1893 1875 1892 1887.9 23 5 12 1991 339 1885 1883 1890 1883 1903 1905 1896 1885 1891 1879 1899 1898 1885 1895 1894 1895 1905 1902 1900 1901 1894 1902 1893 1893 1894.0 24 6 12 1991 340 1887 1915 1897 1902 1906 1896 1895 1898 1911 1884 1889 1910 1885 1904 1899 1900 1912 1896 1902 1903 1907 1898 1911 1906 1900.5 24 7 12 1991 341 1901 1906 1903 1913 1890 1909 1922 1914 1909 1906 1901 1910 1912 1905 1900 1899 1909 1899 1892 1901 1896 1893 1897 1908 1904.0 24 8 12 1991 342 1890 1898 1907 1910 1910 1906 1904 1901 1893 1888 1894 1893 1909 1911 1900 1903 1902 1894 1912 1909 1910 1895 1906 1909 1902.3 24 9 12 1991 343 1897 1892 1898 1892 1890 1900 1884 1884 1896 1885 1875 1896 1897 1900 1888 1897 1891 1914 1890 1885 1907 1901 1910 1902 1894.6 24 10 12 1991 344 1896 1906 1898 1897 1891 1920 1901 1900 1908 1901 1907 1890 1899 1903 1900 1891 1899 1909 1902 1897 1893 1906 1896 1903 1900.5 24 11 12 1991 345 1878 1879 1890 1879 1887 1886 1877 1882 1887 1891 1871 1870 1880 1887 1894 1882 1879 1886 1870 1869 1855 1884 1871 1891 1880.2 24 12 12 1991 346 1863 1873 1883 1884 1869 1868 1877 1864 1876 1877 1892 1874 1874 1867 1876 1875 1875 1878 1881 1865 1873 1885 1870 1872 1874.6 24 13 12 1991 347 1886 1887 1888 1890 1866 1875 1886 1878 1873 1860 1880 1890 1886 1883 1882 1886 1897 1889 1887 1884 1875 1883 1879 1881 1882.1 24 14 12 1991 348 1884 1889 1865 1874 1872 1881 1871 1879 1861 1876 1867 1881 1887 1878 1887 1884 1893 1885 1881 1866 1879 1872 1869 1881 1877.6 24 15 12 1991 349 1878 1874 1861 1879 1876 1864 1872 1885 1876 1877 1878 1890 1894 1881 1900 1878 1893 1881 1884 1887 1893 1868 1880 1879 1880.3 24 16 12 1991 350 1872 1881 1876 1879 1862 1875 1874 1876 1887 1895 1895 1892 1904 1909 1897 1904 1899 1906 1898 1910 1896 1889 1889 1893 1889.9 24 17 12 1991 351 1891 1898 1880 1885 1891 1879 1887 1896 1892 1897 1900 1907 1910 1913 1911 1900 1910 1926 1914 1911 1912 1913 1905 1892 1900.8 24 18 12 1991 352 1900 1898 1907 1912 1901 1909 1906 1900 1904 1919 1914 1911 1919 1909 1903 1904 1914 1915 1903 1917 1910 1898 1893 1893 1906.6 24 19 12 1991 353 1896 1889 1888 1895 1900 1893 1894 1888 1883 1897 1907 1912 1921 1929 1916 1929 1914 1924 1913 1910 1933 1928 1907 1920 1907.8 24 20 12 1991 354 1895 1902 1896 1882 1894 1885 1896 1888 1893 1899 1896 1897 1899 1899 1896 1887 1886 1884 1893 1882 1906 1900 1887 1885 1892.8 24 21 12 1991 355 1878 1870 1881 1878 1893 1879 1903 0 1889 1899 1899 1900 1905 1896 1899 1902 1894 1877 1898 1893 1892 1900 1906 1899 1892.6 23 22 12 1991 356 1888 1896 1894 1895 1900 1904 1897 1900 1900 1899 1905 1902 1903 1909 1910 1896 1894 1899 1892 1887 1890 1863 1884 1894 1895.9 24 23 12 1991 357 1892 1905 1896 1899 1910 1914 1898 1905 1919 1915 1910 1913 1928 1921 1910 1911 1922 1920 1913 1901 1912 1886 1908 1899 1908.6 24 24 12 1991 358 1899 1910 1900 1901 1915 1884 1891 1894 1898 1903 1898 1912 1906 1909 1910 1920 1907 1895 1903 1905 1921 1912 1908 1917 1904.9 24 25 12 1991 359 1913 1906 1917 1949 1925 1928 1935 1919 1932 1917 1925 1926 1930 1913 1926 1929 1931 1926 1918 1929 1930 1936 1924 1930 1925.6 24 26 12 1991 360 1922 1937 1948 1944 1940 1941 1933 1936 1931 1935 1939 1932 1943 1939 1931 1943 1941 1955 1941 1941 1933 1939 1937 1942 1938.5 24 27 12 1991 361 1934 1917 1907 1910 1894 1906 1895 1900 1915 1912 1908 1922 1916 1920 1903 1919 1909 1916 1919 1917 1930 1939 1932 1909 1914.5 24 28 12 1991 362 1909 1905 1898 1898 1906 1880 1901 1889 1909 1896 1902 1908 1894 1903 1898 1902 1908 1908 1907 1901 1900 1907 1888 1880 1899.9 24 29 12 1991 363 1886 1865 1874 1886 1891 1859 1861 1876 1869 1869 1860 1877 1876 1892 1882 1890 1872 1870 1862 1875 1881 1862 1880 1876 1874.6 24 30 12 1991 364 1890 1877 1877 1884 1866 1879 1865 1873 1875 1867 1887 1887 1883 1875 1889 1888 1886 1893 1869 1884 1901 1882 1886 1878 1880.9 24 31 12 1991 365 1872 1879 1871 1881 1884 1874 1895 1882 1888 1891 1894 1905 1897 1913 1898 1895 1893 1887 1901 1895 1891 1880 1887 1880 1888.9 24 MONTHLY MEANS 1893 1895 1892 1896 1894 1892 1894 1893 1895 1895 1897 1901 1902 1903 1901 1900 1902 1901 1898 1897 1900 1897 1895 1896 1896.9 C-12