Precipitation data as list

In Mathematica 9 I can make a WolframAlpha query to get precipitation data using “precipitation 91.6133778W 42.162052N 2009-2012”.

The result I get returns in a chart. How can I get the same information as a list, so I can use it for other analysis?

Thanks much.

WolframAlpha["precipitation 91.6133778 W 42.162052 N 2009 - 2012", {{"ConditionsChart:WeatherData", 1}, "TimeSeriesData"}]

should work.

thank you!