Error bars bracket the datum. Error bars are drawn to the right of the datum. Error bars are drawn to the left of the datum. Error bars bracket the datum, but reversed from case 1. X Y DY1 DY2 format.
Error bars bracket the datum.
Error bars are drawn above the datum. Error bars are drawn below the datum. Error bars bracket the datum, but reversed from case 1. X Y DX DY format. X Y Z format.