Regression analyses comparing one calendar year (2021) of data from the Bideford buoy; (a) significant wave height (Hm0) derived by way of CCO processing and by way of Datawell MkIII processing, (b) Hm0 derived from 12 min heave records by way of CCO processing and Hm0 derived from full-length 30 min heave records by way of Datawell MkIII processing, (c) zero-upcrossing period (Tm02) derived CCO processing and by way of Datawell MkIII processing, (d) Tm02 derived from 12 min heave records by way of CCO processing and Tm02 derived from full-length 30 min heave records by way of Datawell MkIII processing