Table 6.8 -- EDCS Attributes whose label begins with E
| Label | Definition | Attribute value type | EQ label | Related concepts | Code |
| ECOSYSTEM_TYPE | The ecosystem type; a combination of land cover, floristic properties, climate, and physiognomy. | ENUMERATION | 269 | ||
| EDUCATIONAL_BUILDING_TYPE | The type of an educational building. | ENUMERATION | 270 | ||
| ELECTRON_DENSITY | The density of electrons. | REAL | VOLUMETRIC_ENTITY_DENSITY | 271 | |
| ELECTRONIC_DEPTH | The depth of water obtained by electronic depth measuring instruments. | REAL | LENGTH | 272 | |
| ELEVATION_ACCURACY | The type of accuracy of an elevation value. | ENUMERATION | 273 | ||
| EM_BAND | The type of band within a partitioning of the electromagnetic spectrum into standard frequency bands. | ENUMERATION | 274 | ||
| EM_POLARIZATION_TYPE | The type of polarization of electromagnetic radiation; polarization is the condition of having, e.g., uniform and non-random elliptical, circular, or linear variation in vibrational orientation of light or other electromagnetic radiation. | ENUMERATION | 275 | ||
| EM_PROPAGATION_CONDITION | The variation in the electromagnetic propagation path due to the refractivity structure of the atmosphere. | ENUMERATION | 276 | ||
| EM_REFEVAPDUCT_ALTITUDE | The index of refraction for radio frequency propagation within an electromagnetic evaporation duct. | REAL | PURE_NUMBER | EA RF_REFRCT_INDEX_MODIFIED | 277 |
| EM_REFEVAPDUCT_INDEX | The altitude of an electromagnetic propagation duct formed from the evaporation of seawater that begins at sea level and rises to an altitude (duct height) corresponding to a change in the slope in the index of refraction. | REAL | LENGTH | 278 | |
| EM_REFEVAPDUCT_STRENGTH | The strength of an evaporative electromagnetic propagation duct. | ENUMERATION | 279 | ||
| EMISSIVITY | The ratio of emission of a sample to that of a blackbody. Emissivity may be qualified by other attributes, e.g., the electromagnetic band for which the value applies. | REAL | PURE_NUMBER | EA EM_BAND | 280 |
| END_DATE | The latest date on which an object (e.g., a buoy) will be present; coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | EA START_DATE | 281 | |
| ENGINE_SMOKE_RATE | The fraction of maximum smoke production rate of a motor/engine/propulsion system. The following interpretations may be applied: 1/4: Small, 2/4: Medium, 3/4: Large, 4/4: Maximum. | REAL | PURE_NUMBER | 282 | |
| ENTITY_MARKING | The marking displayed on an object (e.g., vehicle), typically including echelon designation and coded bumper number; coded in twelve characters as specified by the Entity Marking - Character Set EBEV, Section 4.5. | STRING | 283 | ||
| ENTRANCE_COUNT | The total number of entry points intended for ingress, without including such points as windows, skylights, garage doors, or holes. | COUNT | EA EXIT_COUNT | 284 | |
| ENTRANCE_OR_EXIT_COUNT | The total number of entry and/or exit points intended for ingress and egress, without including such points as windows, skylights, garage doors, or holes. May be further delineated specifically as EA ENTRANCE_COUNT or EA EXIT_COUNT. | COUNT | 285 | ||
| EXISTENCE_CERTAINTY | The certainty of existence of an object. | ENUMERATION | 286 | ||
| EXISTENCE_STATUS | The state or condition of an object. | ENUMERATION | 287 | ||
| EXIT_COUNT | The total number of exit points intended for egress, without including such points as windows, skylights, garage doors, or holes. | COUNT | EA ENTRANCE_COUNT | 288 | |
| EXPANSION_TYPE | The type of an expansion. | ENUMERATION | 289 | ||
| EXPLOSIVE_MINE_TYPE | The type of mine. | ENUMERATION | 290 | ||
| EXTERIOR_LIGHTING_INTENSITY | The fraction of maximum intensity of general external lighting. | REAL | PURE_NUMBER | 291 | |
| EXTERNAL_PAINT_SCHEME | The applied external paint scheme. | ENUMERATION | 292 | ||
| EXTINCTION_COEFF_ALTITUDE | The altitude of an extinction coefficient observation above the planetary surface. | REAL | GEOPOTENTIAL_ENERGY_LENGTH | 293 | |
| EXTINCTION_COEFF_LOSS_RATE | The rate of radiated energy loss over a distance. | REAL | LINEAR_ENERGY_TRANSFER | 294 | |
| EXTINCTION_COEFF_WAVELENGTH | The electromagnetic wavelength for an extinction coefficient observation. | REAL | LENGTH | 295 | |
| EXTREME_AIR_TEMPERATURE | The temperature of the high or low air temperature for a given period. | REAL | THERMO_TEMPERATURE | 296 |