How are the expanded estimates calculated?
The estimation procedure essentially uses the proportion of daily sport boats fishing in the target hour (from creel survey interview), as a scale factor to convert the “snapshot” of sport fishing boat estimates (from aerial survey) to a daily estimate of sport fishing boat trips. This daily estimate is converted to a monthly estimate of sport boat trips by multiplying the number of like days in the month, and this monthly effort estimate is multiplied by the estimated catch per boat trip (from creel survey interview) to generate a monthly estimate of sport catch.
