format
A data frame with 1000 observations on 5 variables.
rlll{
[,1] lat numeric Latitude of event
[,2] long numeric Longitude
[,3] depth numeric Depth (km)
[,4] mag numeric Richter Magnitude
[,5] stations numeric Number of stations reporting
}source
This is one of the Harvard PRIM-H project data sets. They in turn
obtained it from Dr. John Woodhouse, Dept. of Geophysics, Harvard
University.