To write a letter of about 100 words based on given data.

The report is based on data from 2001, the most recent year for which information was available, foundation officials said.

It was based on data from Iraq, he said, and is out of date for groups at particular risk.

The analysis was based on data from 1991 through August 2008.

Today, most of what we know and do is based on sound scientific data.

Mean temperatures are based on data from 1880 to 1996.

The analysis was based on data from 18 out of 20 universities.

Gathered information, then made the best decision he could based on available data.

The maps are based on data from 1992 to 1996.

Of course, this estimate is based on data from only one show.