The scanners can devide between children and grown ups by size. We guess that small grown ups are categorized as children by the algorithm. In the dataset we downloaded, the distinction is not made, but all pedestrians higher than 90cm are counted as a +1.
It remains unclear, wether people in a wheelchair, carried children, buggies etc. are categorized.
The hours under observation start at X:00 and end at X:59:59. The data from the scanners come in every few minutes and are then commulated for the whole hour.
the unit of observation is defined as person/h. it is defined in absolute numbers. it does not decide between different categories of people (even though technically it could decide between 'adults' and 'children')