The time slots are repeated at 4 hour intervals.

The three hour interval allowed Iraqi air defences to recover.

The buses start to travel at 8:00 a.m every day in 1 hour intervals.

During the morning rush hour intervals are every 6-8 minutes in the westbound direction only.

During the afternoon rush hour intervals are every 10 minutes in the both directions.

This form is also used in television and radio broadcasts that cover multiple time zones which are at one hour intervals.

During rush hour intervals are every 6-10 minutes.

Tropical cyclone data was gathered at 6 hour intervals throughout the season.

I would also suggest that he be monitered at eight hour intervals.

Outside of rush hour intervals are 30 minutes.