11.   It seems worthwhile to attempt such a semi-quantitative approach if only to give rough estimates of the parameters involved.

12.   Also, exposure to direct sunlight is not factored in, making heat indices only rough estimates of the effects of heat and humidity.

13.   Also, exposure to direct sunlight is not factored in, making heat indices only rough estimates of the stifling effects of heat and humidity.

14.   Apparently, that rough estimate is about as precise as the media-relations folks care to get.

15.   A few site managers, however, will provide rough estimates.

16.   All these numbers, aid officials say, are rough estimates because of the confused flow of people in Kosovo.

17.   Brown and other veterans officials had only rough estimates of how many veterans might be eligible for the new benefits.

18.   But in recent interviews, disaster officials in El Progreso conceded that the figure had been just a rough estimate.

19.   But the Duke study can be used to provide a rough estimate of the eventual costs here.

20.   Experts said that figure might provide a rough estimate for those traumatized by the attacks in New York and Washington.