ASPRS v1.4 final classified LAS data grouped into 12 classifications: 0 = created, never classified, 1 = Unclassified, 2 = Ground, 3 = Low Vegetation, 4 = Medium Vegetation, 5 = High Vegetation, 6 = Building, 7 = Low point (noise), 8 = Model key-point (mass point), 9 = Water, 10 = Ignored Ground (breakline proximity), 12 = Overlap. One-meter Nominal Point Spacing.