Details of HICEAS 2010 false killer whale sightings made during systematic (S) and nonsystematic (N) survey effort and while off-effort (O).

Sightings were used, as appropriate, to inform estimation of the line-transect parameters, where f(0) relates to the detection function, E(s) is the mean cluster size, and ni/Li is the stock-specific encounter rate.
Group size is either the geometric mean of the best estimates of the observers or the sum of the best estimates of subgroup size.
Sightings were assigned to one of three stocks: the pelagic, Northwestern Hawaiian Islands (NWHI), or main Hawaiian Islands (MHI) based on genetics (G), location (L), photo-identification (P), proximity (X), or tagging (T).