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 1990 335 1931 1935 1936 1941 1940 1936 1948 1938 1953 1945 1941 1948 1944 1955 1954 1957 1952 1951 1950 1950 1935 1941 1935 1934 1943.8 24 2 12 1990 336 1936 1945 1934 1946 1941 1949 1928 1933 1946 1945 1932 1950 1943 1950 1950 1943 1957 1958 1950 1961 1949 1946 1945 1943 1945.0 24 3 12 1990 337 1955 1939 1939 1940 1935 1941 1953 1940 1941 1946 1953 1954 1949 1939 1953 1945 1956 1969 1949 1951 1953 1938 1952 1951 1947.5 24 4 12 1990 338 1935 1943 1961 1953 1954 1963 1946 1948 1951 1956 1953 1957 1956 1954 1963 1937 1954 1965 1959 1953 1935 1937 1941 1937 1950.5 24 5 12 1990 339 1940 1942 1943 1927 1950 1931 1941 1937 1944 1946 1943 1937 1960 1950 1945 1937 1954 1943 1945 1944 1962 1925 1937 1933 1942.3 24 6 12 1990 340 1942 1935 1943 1926 1950 1940 1936 1939 1941 1955 1948 1942 1954 1944 1949 1947 1945 1941 1942 1927 1934 1937 1938 1943 1941.6 24 7 12 1990 341 1929 1937 1948 1942 1936 1931 1934 1934 1952 1940 1947 1943 1941 1954 1937 1937 1934 1932 1939 1944 1939 1932 1946 1943 1939.6 24 8 12 1990 342 1927 1932 1923 1925 1924 1925 1937 1928 1936 1942 1949 1932 1951 1939 1935 1931 1925 1938 1913 1927 1927 1922 1911 1898 1929.0 24 9 12 1990 343 1909 1907 1902 1907 1903 1918 1908 1910 1905 1919 1911 1916 1912 1914 1899 1917 1911 1906 1905 1907 1921 1923 1912 1907 1910.4 24 10 12 1990 344 1894 1909 1888 1914 1912 1916 1904 1917 1917 1929 1921 1928 1935 1922 1917 1915 1933 1916 1913 1931 1924 1915 1902 1918 1916.3 24 11 12 1990 345 1904 1914 1925 1894 1911 1906 1906 1907 1926 1912 1931 1919 1916 1928 1918 1919 1915 1913 1908 1911 1903 1922 1916 1912 1914.0 24 12 12 1990 346 1911 1906 1915 1911 1912 1911 1918 1914 1930 1934 1912 1939 1931 1920 1921 1936 1929 1927 1938 1929 1923 1932 1937 1950 1924.4 24 13 12 1990 347 1940 1930 1932 1930 1937 1944 1938 1939 1942 1944 1943 1942 1931 1951 1929 1940 1931 1935 1928 1930 1923 1934 1930 1931 1935.6 24 14 12 1990 348 1929 1926 1933 1920 1927 1925 1913 1928 1926 1932 1938 1938 1942 1945 1936 1935 1935 1934 1924 1944 1919 1930 1927 1914 1930.0 24 15 12 1990 349 1929 1922 1928 1926 1919 1926 1926 1929 1944 1935 1930 1927 1934 1937 1932 1935 1930 1922 1943 1935 1927 1937 1925 1924 1930.1 24 16 12 1990 350 1922 1927 1919 1924 1932 1919 1942 1936 1939 1946 1938 1936 1948 1937 1941 1941 1941 1926 1919 1941 1930 1933 1917 1939 1933.0 24 17 12 1990 351 1946 1939 1932 1934 1924 1931 1939 1950 1936 1943 1949 1932 1944 1942 1930 1926 1939 1942 1940 1930 1923 1934 1922 1938 1936.0 24 18 12 1990 352 1946 1930 1934 1939 1925 1925 1940 1929 1933 1937 1950 1947 1945 1945 1929 1929 1950 1937 1924 1933 1932 1936 1939 1938 1936.3 24 19 12 1990 353 1938 1932 1934 1924 1931 1929 1939 1928 1952 1958 1942 1951 1937 1938 1944 1942 1931 1938 1930 1928 1923 1924 1916 1930 1935.0 24 20 12 1990 354 1922 1930 1928 1924 1930 1941 1934 1939 1939 1940 1944 1947 1949 1930 1939 1945 1955 1936 1941 1939 1943 1935 1923 1928 1936.7 24 21 12 1990 355 1926 1938 1922 1938 1931 1936 1927 1940 1956 1960 1955 1938 1960 1951 1945 1948 1944 1940 1932 1928 1922 1928 1921 1918 1937.7 24 22 12 1990 356 1900 1923 1918 1928 1927 1923 1920 1929 1928 1934 1920 1924 1927 1945 1929 1927 1920 1927 1923 1916 1919 1900 1904 1895 1921.1 24 23 12 1990 357 1889 1901 1927 1913 1908 1903 1907 1909 1921 1910 1919 1909 1907 1918 1905 1898 1911 1909 1899 1896 1893 1914 1900 1899 1906.9 24 24 12 1990 358 1890 1913 1908 1908 1919 1929 1918 1922 1916 1918 1932 1929 1931 1941 1937 1929 1935 1941 1940 1942 1939 1925 1928 1928 1925.8 24 25 12 1990 359 1942 1948 1925 1937 1929 1940 1931 1938 1936 1925 1948 1950 1946 1931 1931 1930 1939 1943 1923 1930 1933 1941 1923 1928 1935.3 24 26 12 1990 360 1924 1923 1947 1930 1924 1941 1943 1943 1935 1930 1932 1961 1942 1929 1939 1935 1942 1940 1940 1935 1917 1923 1913 1931 1934.1 24 27 12 1990 361 1931 1936 1924 1948 1932 1934 1948 1938 1948 1948 1948 1951 1949 1958 1942 1934 1943 1943 1931 1942 1944 1927 1948 1946 1941.4 24 28 12 1990 362 1933 1937 1924 1926 1948 1927 1939 1947 1940 1947 1948 1971 1952 1951 1956 1945 1936 1933 1943 1950 1932 1941 1941 1946 1942.2 24 29 12 1990 363 1945 1935 1933 1945 1937 1942 1943 1947 1956 1950 1962 1959 1969 1961 1958 1965 1958 1966 1950 1957 1960 1946 1954 1946 1951.8 24 30 12 1990 364 1962 1956 1953 1943 1939 1950 1959 1966 1947 1958 1954 1937 1944 1938 1952 1932 1947 1945 1950 1931 1940 1929 1927 1928 1945.3 24 31 12 1990 365 1938 1928 1935 1935 1939 1925 1916 1926 1934 1936 1937 1940 1923 1947 1943 1961 1949 1934 1938 1937 1933 1958 1937 1936 1936.9 24 MONTHLY MEANS 1928 1930 1929 1929 1930 1931 1932 1933 1938 1939 1940 1940 1941 1941 1937 1936 1939 1937 1933 1935 1931 1931 1928 1929 1934.0 C-12