Radio plays are counted either through a census approach or a sample day approach to determine the number of times a work is performed.
Here's a breakdown of the two methods:
- Census Basis: For radio stations using a census basis, they are required to report every single performance and play of each work for every day of the month. This provides a complete and exhaustive count.
- Sample Day Basis: For radio stations using a sample day basis, they are required to report the same information (every performance and play per work) only for specific, agreed-upon days. These sample days are then used to extrapolate data for the entire month or reporting period.
Essentially, the difference lies in whether all plays are counted (census) or only plays from select days are counted (sample).