Meters per second: Meters per second is the SI unit for speed, expressing the distance traveled in meters in one second.
Feet per second: Feet per second is a unit of speed expressing the distance traveled in feet in one second.
| Meters per second | Feet per second |
|---|---|
| 1871 | 6,138.45 |
| 1872 | 6,141.73 |
| 1873 | 6,145.01 |
| 1874 | 6,148.29 |
| 1875 | 6,151.58 |
| 1877 | 6,158.14 |
| 1878 | 6,161.42 |
| 1879 | 6,164.70 |
| 1880 | 6,167.98 |
| 1881 | 6,171.26 |