Reconstructed sea state using ship motion data recorded during the Antarctic Circumnavigation Expedition (ACE). Data file: Reconstructed-Sea-State.txt Date_Time: Date and time of end of averaging period in ISO8601 format YYYY-MM-DDThh:mm:ss+00:00 [UTC] Latitude: Latitude of the vessel at the time of the end of the averaging period [degree_north] Longitude: Longitude of the vessel at the time of the end of the averaging period [degree_east] Hs: Significant wave height [m] Tp: Peak wave period [s] Tm1: Mean Wave period based on the moment of order-1 [s] T1: Mean Wave period based on the first moment [s] T2: Mean Wave period based on the second moment [s] The values of missing parameters are set to NaN.