Display the axis at a variable position based on the ratio of the minimum negative value to the maximum positive value in the range.
Positive values are displayed in a left-to-right direction.
Negative values are displayed in a right-to-left direction.
When all values are positive or all values are negative, no axis is displayed.
Display the axis at the midpoint of the cell regardless of the set of values in the range.
Positive values are displayed in a left-to-right direction.
Negative values are displayed in a right-to-left direction.