Provenance. Built from CalCOFI integrated database release v2026.07.30 on 2026-07-30 from sample, obs.
CF scope. Fully CF: each row is an independent observation with its own time and position, which is a CF point collection. Rows are at the OCCURRENCE grain (event x taxon x life stage x depth), not the event grain, so a sample with many taxa contributes many points.