Then the security person at the monitoring station called the home to see if everything was okay.

And test it at different times of the day to be sure the monitoring station is listening.

Were they bits of information that couldn't be transmitted to some central monitoring station?

The government has opened a further six air pollution monitoring stations, bringing the total to 16.

There has also been increased water sampling at 900 monitoring stations throughout the city.

Those cool eyes on her from behind the monitoring station he'd wandered to.

He didn't want anyone to see him checking his monitoring stations.

A week ago he had installed an atmospheric monitoring station here.

The three men walked across the dirt parking lot and stopped at the monitoring station.

Grace could hear the cries from the monitoring station in the hall.