Use it in conjunction with the Central Range indicator.
Below is the interpretation of the reading.
CPR Width > 0.5 - Sideways or Trading Range Day,
CPR Width > 0.75 - increases the likelihood of sideways trading behavior,
CPR Width < 0.5 - Trending type of day,
CPR Width < 0.25 - increases the likelihood of a trending market.
The above reading only increases the likely-hood of the possibility and not always right.