The data in the table is based on a 1961 - 1990 average.

Those data were based on just three months of experience, and not all states had to file reports.

No. tested is the total number of students upon which the data are based.

The data is based on the five Metropolitan markets only.

The delegation said its data came from the state and was based on reporting by the city.

The data cover the five years 1992-1996 and are based on monthly total returns.

The Plan would have had the following demographics (data based on 1945).

It could also break out the data based on two benchmark years, before 1985 and after 1993.

Later data is based on various sources, some otherwise unknown to us.

His data are based on 306 working days, which accounted for 5,580 accidents.