Dataset:   semen_volume.csv

Source: M.S. Christman, K.H. Kraft, G.E. Tasian, S.A. Zderic, T.F. Kolon (2013).
"Reproducibility and Reliability of Semen Analyses in Youths at Risk
of Infertility," Journal of Urology, 
2013 August ; 190(2): 683–688. doi:10.1016/j.juro.2013.02.030.

Description:
Two semen specimen volume measurements on 76 males.
Data approximated from plot in paper.

Variable Names:
sa1Vol   (mL)
sa2Vol   (mL)