These numbers seem extremely high based on research I know exists in the market (I just don't remember where). From what I recall, the average consumer watched between 8-12 channels regularly (I specifically remember the low-end being a single digit), with the average household watching a total of 16-20 channel (without young children) and 20-24 channels (with young children). This does not include "fly-by's," or viewing that takes place while someone is channel surfing.
I remember the numbers (ballpark), but need to cite a source in my presentation. Hence, I really need more specificity if possible.