HI - I have a very simple line chart based on the following data series:

Date Time Systolic Diastolic Heart Rate
11/1 20:00 170 105 65
11/1 22:00 165 100 67
12/2 20:00 140 80 70
12/2 21:00 150 85 74

The problem is that the chart produced by the data shows the Y axis scale
all wrong. For example, the first Heart rate value is plottted at ~340 going
by the Y axis scale. However the cursor rollover produces the correct value.
Further, the lines for Diastolic are ABOVE Systolic on the chart, and the
lines for Heart Rate are ABOVE Diastolic. Any suggestions would be most
appreciated.