Quarter	Hours
1924-01-01	48.2000
1924-04-01	48.4000
1924-07-01	48.1000
1924-10-01	47.7000
1925-01-01	48.6000
1925-04-01	48.7000
1925-07-01	48.6000
1925-10-01	47.7000
1926-01-01	48.2000
1926-04-01	49.0000
1926-07-01	48.7000
1926-10-01	48.1000
1927-01-01	48.2000
1927-04-01	49.2000
1927-07-01	48.2000
1927-10-01	47.4000
1928-01-01	48.0000
1928-04-01	48.7000
1928-07-01	48.0000
1928-10-01	47.5000
1929-01-01	47.9000
1929-04-01	49.0000
1929-07-01	48.7000
1929-10-01	47.5000
1930-01-01	47.2000
1930-04-01	47.7000
1930-07-01	45.8000
1930-10-01	44.4000
1931-01-01	44.1000
1931-04-01	44.8000
1931-07-01	43.0000
1931-10-01	39.6000
1932-01-01	39.9000
1932-04-01	40.2000
1932-07-01	37.8000
1932-10-01	37.3000