ENH: Improved error difference
ENH: Improved error difference

jcfr/CDash,cpatrick/CDash,cpatrick/CDash,jcfr/CDash,jcfr/CDash,cpatrick/CDash,cpatrick/CDash,cpatrick/CDash,jcfr/CDash,cpatrick/CDash,jcfr/CDash,jcfr/CDash