10.3.4 Dance precision
The precision of the directional information encoded in the dances might change either with the hive-feeder distance (Towne and Gould, 1988) or with changes in the profitability of the food source (De Marco et al., 2005). A simple measure to estimate the precision of the information is to consider the directional scatter of the total waggle runs measured for a single dance. Another possibility is to measure the divergence between the angles of consecutive waggle runs, a parameter that allows quantifying changes in the scatter along the dance display. Divergence is calculated as the direction of a particular waggle run minus the direction of the previous one (with a minimum of 0° to a maximum of 180°). Thus, the first divergence angle in a given dance is associated with the second waggle run displayed by the dancer.