1. metropolis::magfields
    A case control study of childhood leukemia and magnetic fields from Savitz, Wachtel, Barnes, et al (1998) doi:10.1093/oxfordjournals.aje.a114943 <https://doi.org/10.1093/oxfordjournals.aje.a114943>.
    csv| xlsx| json| ndjson| rda| rds
    data.frame|234 x 2
  2. qgcomp::metals
    Well water data
    csv| xlsx| json| ndjson| rda| rds
    data.frame|452 x 26