The poor boy is limited to a range of nine years.

The mean age at presentation was 48 with a range of 12-79 years.

Final decommissioning is estimated to be done in the range of 10-30 years.

The surviving part covers a range of 25 years between 1625 and 1649.

The first half-life was determined to be in the range of 10 years.

That is down from a range of three and a quarter years to 5 years.

Their mean age was 46.6 years with a range of 21-82 years, and 10 were men.

The scheme has a range of several hundred thousand years.

They were infertile for a range of 2.6 to 7.8 years.

Most of the world's amber is in the range of 30-90 million years old.