A robotic sensor measures air quality characteristics as experienced by a toddler, such as a child of six to twelve months in age. The robot includes an air quality sensor, a terrain drive train, a sensor drive train and a control circuit that controls the terrain drive train and the sensor drive train. The control circuit directs the terrain drive train to traverse an area at a speed and a start and stop rate consistent with that of a child and directs the sensor drive train to control the monitoring height at which the air quality sensor measures the air quality characteristic in a manner consistent with that of the child.

 
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