Dataset: gravity_latlong.dat Source: T.C. Mendenhall (1891). "Determinations of Gravity with the New Half-Second Pendulums of the Coast and Geodetic Survey at Stations on the Pacific Coast, in Alaska, and the Base Stations, Washington, D.C., and Hoboken, N.J.," Report of the Superintendent of the U.S. Coast and Geodetic Survey, Appendix No. 15-1891, pp. 503-564 Description: Gravity (in Dynes) at station and reduced to sea level, based on observations made by 3 half-second pendulums made at 13 stations in the U.S. and British Columbia in 1891. Variables/Columns: Station 1-20 Latitude 21-28 Longitude 29-36 Sea Level 37-44 Gravity (at station) 45-54 Gravity (reduced to sea level) 55-64