Data are described in Pugh, D. T., Bridge, E., Edwards, R., Hogarth, P., Westbrook, G., Woodworth, P. L., & McCarthy, G. D. (2021). Mean Sea Level and Tidal Change in Ireland since 1842: A case study of Cork. Ocean Science Discussions, 1-26. Location: Passage West, Co. Cork, Ireland Latitude: 51.871 Longitude: -8.334 Height is given in ft ODD and m ODM ODM is Ordnance Datum Malin and is current national datum used in Ireland. ODD is Ordnance Datum Dublin and is a historical datum. See paper for details on tranfer between datums Time is stored as hh:mm:ss Missing Values = -9999 Data were gather from tide pole readings. Missing data indicate times when observations were not taken.