Table 4.7 Comparison of average dolphin encounter rates from impact monitoring period (September - November 2013) and baseline monitoring period (September-November 2011)

	Encounter rate (STG) (no. of on-effort dolphin sightings per 100 km of survey effort)		Encounter rate (ANI) (no. of dolphins from all on-effort sightings per 100 km of survey effort)
	September - November 2013	September- November 2011	September - November 2013	September- November 2011
West Lantau	20.51 ± 12.34	16.43 ± 7.70	60.68 ± 37.60	60.50 ± 38.47

(Note: the encounter rates deduced from the baseline monitoring period have been recalculated based only on the survey effort and on-effort sighting data made along the primary transect lines under favourable conditions)