observation_date,M0829AUSM065NNBR 1920-06-01,49.4 1920-07-01,49.5 1920-08-01,49.3 1920-09-01,48.7 1920-10-01,48.3 1920-11-01,46.4 1920-12-01,45.8 1921-01-01,44.2 1921-02-01,44.2 1921-03-01,45.0 1921-04-01,44.7 1921-05-01,44.5 1921-06-01,44.6 1921-07-01,45.2 1921-08-01,45.8 1921-09-01,46.0 1921-10-01,47.7 1921-11-01,47.1 1921-12-01,47.6 1922-01-01, 1922-02-01, 1922-03-01, 1922-04-01, 1922-05-01, 1922-06-01, 1922-07-01,48.0 1922-08-01,48.7 1922-09-01,49.0 1922-10-01,49.6 1922-11-01,49.7 1922-12-01,49.9 1923-01-01,50.0 1923-02-01,49.7 1923-03-01,50.1 1923-04-01,50.2 1923-05-01,49.9 1923-06-01,49.5 1923-07-01,49.2 1923-08-01,48.8 1923-09-01,48.0 1923-10-01,48.5 1923-11-01,48.2 1923-12-01,48.2 1924-01-01,48.2 1924-02-01,48.2 1924-03-01,47.6 1924-04-01,47.7 1924-05-01,46.6 1924-06-01,45.7 1924-07-01,45.0 1924-08-01,45.5 1924-09-01,46.4 1924-10-01,47.5 1924-11-01,46.9 1924-12-01,48.0 1925-01-01,48.5 1925-02-01,48.5 1925-03-01,48.6 1925-04-01,48.1 1925-05-01,48.0 1925-06-01,47.4 1925-07-01,47.4 1925-08-01,47.6 1925-09-01,48.4 1925-10-01,48.4 1925-11-01,48.6 1925-12-01,49.0 1926-01-01,48.4 1926-02-01,49.0 1926-03-01,48.8 1926-04-01,48.1 1926-05-01,47.9 1926-06-01,47.9 1926-07-01,47.5 1926-08-01,47.5 1926-09-01,48.5 1926-10-01,48.7 1926-11-01,47.6 1926-12-01,47.7 1927-01-01,48.1 1927-02-01,48.4 1927-03-01,48.3 1927-04-01,47.9 1927-05-01,48.2 1927-06-01,47.7 1927-07-01,47.0 1927-08-01,47.6 1927-09-01,47.7 1927-10-01,47.4 1927-11-01,47.1 1927-12-01,47.3 1928-01-01,48.0 1928-02-01,48.4 1928-03-01,48.2 1928-04-01,47.4 1928-05-01,47.7 1928-06-01,48.0 1928-07-01,47.6 1928-08-01,47.9 1928-09-01,48.3 1928-10-01,47.9 1928-11-01,47.7 1928-12-01,48.0 1929-01-01,48.6 1929-02-01,49.1 1929-03-01,49.0 1929-04-01,48.8 1929-05-01,48.6 1929-06-01,48.4 1929-07-01,48.4 1929-08-01,48.3 1929-09-01,48.8 1929-10-01,49.3 1929-11-01,46.2 1929-12-01,46.6 1930-01-01,46.2 1930-02-01,46.7 1930-03-01,45.9 1930-04-01,45.8 1930-05-01,44.9 1930-06-01,44.5 1930-07-01,42.9 1930-08-01,42.4 1930-09-01,42.4 1930-10-01,42.6 1930-11-01,41.0 1930-12-01,41.4 1931-01-01,40.2 1931-02-01,42.3 1931-03-01,42.3 1931-04-01,41.9 1931-05-01,42.8 1931-06-01,41.3 1931-07-01,40.1 1931-08-01,39.7 1931-09-01,39.4 1931-10-01,38.1 1931-11-01,37.8 1931-12-01,38.4 1932-01-01,35.9 1932-02-01,37.7 1932-03-01,36.1 1932-04-01,34.2 1932-05-01,33.7 1932-06-01,32.8 1932-07-01,31.9 1932-08-01,32.1 1932-09-01,35.2 1932-10-01,36.5 1932-11-01,36.5 1932-12-01,35.1 1933-01-01,35.1 1933-02-01,35.6 1933-03-01,32.1 1933-04-01,34.0 1933-05-01,37.6 1933-06-01,41.5 1933-07-01,42.9 1933-08-01,38.2 1933-09-01,36.3 1933-10-01,36.1 1933-11-01,33.8 1933-12-01,33.8 1934-01-01,34.0 1934-02-01,35.6 1934-03-01,36.4 1934-04-01,35.8 1934-05-01,35.4 1934-06-01,35.5 1934-07-01,34.1 1934-08-01,33.5 1934-09-01,33.4 1934-10-01,33.9 1934-11-01,33.7 1934-12-01,35.1 1935-01-01,36.3 1935-02-01,37.2 1935-03-01,36.8 1935-04-01,36.8 1935-05-01,36.0 1935-06-01,36.1 1935-07-01,36.3 1935-08-01,37.0 1935-09-01,37.9 1935-10-01,38.6 1935-11-01,38.5 1935-12-01,38.4 1936-01-01,38.1 1936-02-01,37.8 1936-03-01,38.3 1936-04-01,39.1 1936-05-01,39.0 1936-06-01,39.0 1936-07-01,38.8 1936-08-01,39.8 1936-09-01,40.3 1936-10-01,40.8 1936-11-01,41.1 1936-12-01,41.4 1937-01-01,40.3 1937-02-01,41.3 1937-03-01,41.4 1937-04-01,40.6 1937-05-01,40.2 1937-06-01,39.8 1937-07-01,38.7 1937-08-01,38.5 1937-09-01,37.9 1937-10-01,37.4 1937-11-01,35.2 1937-12-01,33.6 1938-01-01,32.2 1938-02-01,33.1 1938-03-01,33.0 1938-04-01,32.7 1938-05-01,32.5 1938-06-01,32.9 1938-07-01,33.7 1938-08-01,35.5 1938-09-01,36.0 1938-10-01,36.8 1938-11-01,36.7 1938-12-01,36.6 1939-01-01,36.7 1939-02-01,36.9 1939-03-01,37.1 1939-04-01,36.7 1939-05-01,36.5 1939-06-01,37.2 1939-07-01,37.1 1939-08-01,37.9 1939-09-01,38.2 1939-10-01,39.0 1939-11-01,39.1 1939-12-01,39.1 1940-01-01,38.7 1940-02-01,38.0 1940-03-01,37.7 1940-04-01,37.6 1940-05-01,37.5 1940-06-01,38.0 1940-07-01,38.1 1940-08-01,38.5 1940-09-01,39.0 1940-10-01,39.9 1940-11-01,39.6 1940-12-01,40.1 1941-01-01,40.2 1941-02-01,41.0 1941-03-01,41.2 1941-04-01,40.7 1941-05-01,41.3 1941-06-01,41.7 1941-07-01,41.0 1941-08-01,41.2 1941-09-01,41.6 1941-10-01,41.7 1941-11-01,41.5 1941-12-01,41.6 1942-01-01,42.4 1942-02-01,42.4 1942-03-01,42.7 1942-04-01,42.8 1942-05-01,42.7 1942-06-01,42.7 1942-07-01,42.6 1942-08-01,43.2 1942-09-01,43.4 1942-10-01,43.6 1942-11-01,43.7 1942-12-01,44.2 1943-01-01,44.3 1943-02-01,44.5 1943-03-01,44.7 1943-04-01,44.9 1943-05-01,45.3 1943-06-01,45.2 1943-07-01,45.0 1943-08-01,45.1 1943-09-01,45.3 1943-10-01,45.5 1943-11-01,45.5 1943-12-01,45.1 1944-01-01,45.2 1944-02-01,45.7 1944-03-01,45.8 1944-04-01,45.2 1944-05-01,45.5 1944-06-01,45.9 1944-07-01,45.4 1944-08-01,45.6 1944-09-01,45.6 1944-10-01,45.7 1944-11-01,45.6 1944-12-01,45.8 1945-01-01,46.2 1945-02-01,46.0 1945-03-01,46.1 1945-04-01,45.4 1945-05-01,45.0 1945-06-01,45.2 1945-07-01,44.3 1945-08-01,43.4 1945-09-01,42.3 1945-10-01,42.3 1945-11-01,41.9 1945-12-01,41.7 1946-01-01,40.6 1946-02-01,39.2 1946-03-01,40.7 1946-04-01,40.4 1946-05-01,39.3 1946-06-01,39.8 1946-07-01,40.0 1946-08-01,40.1 1946-09-01,40.0 1946-10-01,40.4 1946-11-01,40.4 1946-12-01,40.4 1947-01-01,40.8 1947-02-01,40.8 1947-03-01,40.6 1947-04-01,40.5 1947-05-01,40.4 1947-06-01,40.3 1947-07-01,39.7 1947-08-01,39.7 1947-09-01,40.5 1947-10-01,40.9 1947-11-01,40.8 1947-12-01,41.1 1948-01-01,40.9 1948-02-01,40.6 1948-03-01,40.7 1948-04-01,40.2 1948-05-01,39.7 1948-06-01,40.0 1948-07-01,39.7