Scaling axes
Sometimes you need to have a special scale for one of the axes of your chart. After highlighting the axis you wish to change, right-click and choose Object Properties. On the Scale tab, you can decide if you need a logarithmic or linear scale (default), how many marks you need on the line, where the marks are to appear, and the increments (intervals) of the scale.
You must first deselect the Automatic option in order to modify the value for any scale.
Axis scales