Hallo,
I want to display more than one data series on the same step chart. The axis is scaled as dates and the y axis is scaled in [mm] of water evaporated. The dates cover the same period (April to October) for each year and the values are in [mm], (y1 to y5) and are in adjacernt columns - one for each year.

I tried both methods described in various artcles: Line Chart method and the XY chart + error bar method.

Line Chart method: when I add the second series, the step chart type display reverts back to a simple line chart display with sharp spikes - not what I want.

XY chart + error bar method: when I add the second series, the first series - which had originally looked fine - acquires "whiskers" of single, vertical lines.

The problem is NOT with defining/ adding a 2nd or 3rd series in the source data box but with the display; i.e. does no longer look like a step chart.

Any ideas ?