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In the Nielsen Company's rankings, share describes the percentage of active television sets on, and tuned to a particular program, out of all TV owning households.

Rating describes the percentage of households who own televisions that are tuned to a particular show.

A 15.2 rating means 15.2% of all households owning televisions were tuned to ER. A 27.0 share means that 27.0% of all those households with a television on at the time were tuned to ER. For ER,

Thus, about 56% of the TV owning households had their TVs tuned to ER.

What were the percentages for the other shows?

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