The action takes place over a period of 24 hours.

We looked at the data from 4/11/02 for a 24 hour period.

This he did three times within a period of 24 hours.

This treatment is given over a two to three hour period.

It is most common when the subject has had under 10 hours sleep within a 36 hour period.

Abandoned call rates must be less than 3% in any 24 hour period.

Mark sense cards were used, and a class of 30 children could each get two runs in a one hour period.

I would be relieved after a period of four hours.

Over a period of three hours, they walked through them mentally until each man knew exactly what had to happen.

He would strip his skin off over a period of 24 hours maybe longer.