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An agency has to follow air quality control.

The set of sensors is described in another file, having one sensor per line, under the following format:

SensorID;Latitude:Longitude;Description;

The different types of measures are in a third file:

AttributeID;Unit;Description;

An agency requires a software application to follow the sensors state and to get aggregate information. Aggregate information will help deciders to take decisions to enhance air quality. For example, on a given territory, get the mean air quality at a given time, or on a given timespan.

It is also required to identify sensors with similar behaviours.