Grid of porosity (%) for the Tertiary section in the Eastern Gulf of Mexico. Generated by the Geological Survey of Alabama, with IHS Petra (v. 3.11.1.14) geologic interpretation software, using highly connected features (least squares) and smoothing contours with grid flexing. Data format is long/lat/Z where long/lat is in WGS84 and Z is % This material is based upon work supported by the U.S. Department of Energy National Energy Technology Laboratory (DE-FE0026086). Cost share and research support are provided by the Project Partners and an Advisory Committee.