Beginning in 2005, a small number have been observed in Wisconsin.

A number of cardinal rules must always be observed.

Therefore, increased numbers of target cells may be observed.

A number of trends in the political experience of presidents have been observed over the years.

A large number of smaller artificial mounds can also be observed in the site.

Based on these two system types, a various number of prototypes were developed, installed and observed.

Recently, increasing numbers have been observed in the Gulf of California.

A number of other smaller lineage groups are also observed.

For example, suppose that four numbers are observed or recorded, resulting in a sample of size 4.

A number of vertebrates and insects can also be observed at this station.