I have data series that may have gaps in them. For instance, this series is
typical:

1 yr 70
2 yr 87.5
3 yr 110
4 yr 120
5 yr 129
6 yr
7 yr
8 yr
9 yr
10 yr 162.5

For other series the gaps may appear in other places. I would like to chart
all of these (up to five series) on a single chart.

I can do this, but the gaps make the line "disappear" where there are gaps.
For instance, in the case above there is a nice like from 1 to 6, then a
single dot at 10. Is there some way to tell it to ignore the gap and draw
straight lines over them?

Maury