Click here to see the SAS code.
Click here to see the example.

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This is a simple 'needle' plot, showing the water consumption at my house.
Notice that the consumption started going up dramatically towards the end
of year 2006 ... and then I finally found a leak in my yard and had it 
repaired, and the consumption went back down to normal levels.

I think such graphs would be useful to include in the water bill,
so customers can look for leaks, or other changes in their water
consumption.

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