Quarter	Hours
1924-07-01	45.9000
1924-10-01	47.0000
1925-01-01	47.4000
1925-04-01	47.1000
1925-07-01	46.6000
1925-10-01	47.0000
1926-01-01	47.5000
1926-04-01	47.8000
1926-07-01	47.4000
1926-10-01	47.4000
1927-01-01	47.6000
1927-04-01	47.6000
1927-07-01	46.6000
1927-10-01	46.4000
1928-01-01	47.1000
1928-04-01	46.9000
1928-07-01	46.5000
1928-10-01	47.3000
1929-01-01	47.8000
1929-04-01	48.1000
1929-07-01	47.4000
1929-10-01	47.1000
1930-01-01	46.8000
1930-04-01	45.6000
1930-07-01	43.3000
1930-10-01	42.7000
1931-01-01	42.3000
1931-04-01	42.2000
1931-07-01	41.2000
1931-10-01	38.8000
1932-01-01	39.0000
1932-04-01	38.4000
1932-07-01	36.5000
1932-10-01	36.8000
1933-01-01	37.1000
1933-04-01	38.0000
1933-07-01	39.9000
1933-10-01	39.6000