Given the approximate nature of many of the assumptions, this can only be taken as a crude estimate.

We lack comprehensive, reliable information on the Iraqi cases, but a crude estimate puts the rate of abduction at 5 to 30 new cases daily.

During the early 1960s government departments were asked to produce fairly crude estimates of their spending four years ahead in constant prices.

"It was a crude estimate, and we are going to try to refine the procedure," he said.

Trevize waited for its orbit to be computed and the first crude estimate seemed reasonable.

An estimated 15,500 tons of solid waste were buried at the landfill (this is a very crude estimate).

That's nearly half a billion, and even that is only a very crude estimate.

I can make crude estimates, but with little confidence in the results.

Even a crude visual estimate of the angles would fix one's position within twenty or so light-years.

This cladogram does not represent time, but a crude estimate of the time can be inferred from morphological changes.