Month	Train-Miles Per Train-Hour
1920-01-01	7.37000
1920-02-01	7.27000
1920-03-01	7.47000
1920-04-01	7.79000
1920-05-01	7.91000
1920-06-01	8.11000
1920-07-01	8.13000
1920-08-01	8.04000
1920-09-01	7.74000
1920-10-01	8.08000
1920-11-01	7.71000
1920-12-01	7.34000
1921-01-01	8.20000
1921-02-01	8.52000
1921-03-01	8.87000
1921-04-01	9.89000
1921-05-01	10.0700
1921-06-01	9.67000
1921-07-01	8.74000
1921-08-01	8.70000
1921-09-01	8.93000
1921-10-01	8.89000
1921-11-01	8.54000
1921-12-01	8.51000
1922-01-01	8.54000
1922-02-01	8.64000
1922-03-01	8.87000
1922-04-01	9.04000
1922-05-01	9.34000
1922-06-01	9.52000
1922-07-01	9.25000
1922-08-01	9.04000
1922-09-01	8.82000
1922-10-01	8.75000
1922-11-01	8.32000
1922-12-01	8.33000
1923-01-01	8.45000
1923-02-01	8.33000
1923-03-01	8.42000
1923-04-01	8.73000
1923-05-01	8.88000
1923-06-01	9.03000
1923-07-01	8.91000
1923-08-01	8.79000
1923-09-01	8.61000
1923-10-01	8.46000
1923-11-01	7.88000
1923-12-01	7.54000
1924-01-01	7.84000
1924-02-01	7.55000
1924-03-01	7.76000
1924-04-01	8.16000
1924-05-01	8.67000
1924-06-01	8.91000
1924-07-01	8.67000
1924-08-01	8.62000
1924-09-01	8.44000
1924-10-01	8.20000
1924-11-01	8.05000
1924-12-01	7.79000
1925-01-01	7.95000
1925-02-01	8.09000
1925-03-01	8.39000
1925-04-01	8.66000
1925-05-01	8.98000
1925-06-01	8.99000
1925-07-01	8.21000
1925-08-01	8.58000
1925-09-01	8.53000
1925-10-01	8.20000
1925-11-01	7.57000
1925-12-01	7.10000
1926-01-01	7.55000
1926-02-01	7.60000
1926-03-01	7.89000
1926-04-01	8.18000
1926-05-01	9.25000
1926-06-01	9.53000
1926-07-01	9.21000
1926-08-01	8.93000
1926-09-01	8.74000
1926-10-01	7.99000
1926-11-01	7.17000
1926-12-01	6.70000
1927-01-01	6.95000
1927-02-01	6.96000
1927-03-01	7.76000
1927-04-01	8.17000
1927-05-01	8.61000
1927-06-01	8.68000
1927-07-01	8.39000
1927-08-01	8.48000
1927-09-01	8.30000
1927-10-01	8.04000
1927-11-01	8.15000
1927-12-01	7.66000
1928-01-01	8.11000
1928-02-01	8.37000
1928-03-01	8.64000
1928-04-01	8.84000
1928-05-01	9.15000
1928-06-01	9.19000
1928-07-01	9.06000
1928-08-01	8.90000
1928-09-01	8.68000
1928-10-01	8.71000
1928-11-01	8.48000
1928-12-01	7.89000
1929-01-01	8.01000
1929-02-01	7.74000
1929-03-01	7.87000
1929-04-01	8.70000
1929-05-01	8.99000
1929-06-01	9.11000
1929-07-01	8.87000
1929-08-01	8.72000
1929-09-01	8.59000
1929-10-01	8.59000
1929-11-01	8.13000
1929-12-01	7.98000
1930-01-01	8.29000
1930-02-01	8.36000
1930-03-01	8.79000
1930-04-01	9.02000
1930-05-01	9.34000
1930-06-01	9.40000
1930-07-01	9.24000
1930-08-01	9.05000
1930-09-01	9.03000
1930-10-01	9.06000
1930-11-01	8.72000
1930-12-01	7.91000
1931-01-01	8.32000
1931-02-01	8.87000
1931-03-01	8.99000
1931-04-01	9.08000
1931-05-01	9.46000
1931-06-01	9.49000
1931-07-01	9.42000
1931-08-01	9.30000
1931-09-01	9.36000
1931-10-01	9.16000
1931-11-01	9.15000
1931-12-01	8.75000