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.
Thus, about 56%
of the TV owning households had their TVs
tuned to ER.
What were the
percentages for the other shows?