Displays the axis at a variable position based on the ratio of the minimum negative value to the maximum positive value in the associated range. Positive values are displayed in a left-to-right direction; negative values are displayed from right to left. When all values are positive, or all values are negative, no axis is displayed.

Displays the axis at the midpoint of the cell, regardless of the set of values in the associated range. Positive values are displayed in a left-to-right direction; negative values are displayed from right to left.

No axis is displayed; positive and negative values are both displayed in the left-to-right direction.