Table 6.9 — EAs whose label begins with E

Label Concept definition Attribute value type EQ label Code
ECOSYSTEM_TYPE The type of an ecosystem based on a combination of land cover, floristic properties, climate, and physiognomy. ENUMERATION   321
EDUCATIONAL_BUILDING_TYPE The type of an educational <BUILDING>. ENUMERATION   322
ELECTRON_DENSITY The number of electrons per unit <<VOLUME>>; the electron density. REAL VOLUMETRIC_ENTITY_DENSITY 323
ELECTRONIC_WATERBODY_FLOOR-
_DEPTH 		The <<DEPTH_OF_WATERBODY_FLOOR>> obtained by electronic depth measuring instruments. REAL LENGTH 324
ELEV_ELECTRICAL_CABLE_ICING-
_SAG 		The value of the maximum variation in the vertical clearance of an <ELEVATED_ELECTRICAL_CABLE> due to an accumulation of <ICE>; the elevated electrical cable icing sag. REAL LENGTH 325
ELEV_ELECTRICAL_CABLE-
_MINIMUM_HEIGHT 		The minimum <<HEIGHT_AGL>> of an <ELEVATED_ELECTRICAL_CABLE> above the underlying <PLANETARY_SURFACE>; the elevated electrical cable minimum clearance. REAL LENGTH 326
ELEV_ELECTRICAL_CABLE_PYLON-
_SPACING 		The spacing distance between adjacent <PYLON>s along an <ELEVATED_ELECTRICAL_CABLE>. REAL LENGTH 327
ELEV_ELECTRICAL_CABLE_SAG The maximum vertical distance from the height of an <ELEVATED_ELECTRICAL_CABLE> at a connection to a <PYLON> to the lowest point of the <ELEVATED_ELECTRICAL_CABLE>; the elevated electrical cable sag. REAL LENGTH 328
ELEV_ELECTRICAL_CABLE-
_SEGMENT_COUNT 		The number of straight segments that may be used to approximate the catenary shape of an <ELEVATED_ELECTRICAL_CABLE> between adjacent <PYLON>s; the elevated electrical cable segment count. COUNT   329
ELEV_ELECTRICAL_CABLE_TYPE The type of suspension of an <ELEVATED_ELECTRICAL_CABLE>. ENUMERATION   330
ELEVATION The distance above a <SURFACE_DATUM>. REAL LENGTH 331
ELEVATION_ACCURACY_STATEMENT A statement of the accuracy of an <<ELEVATION>>. ENUMERATION   332
ELEVATION_ANGLE The <<VECTOR_ELEV_ANGLE_LOCAL>> from the horizontal plane at the observer's location, to either a <LINE> passing through the observer, or a vector relative to the observer, or the direction from the observer to an <OBJECT> or <LOCATION>; the elevation angle. REAL PLANE_ANGLE 333
EM_BAND The scientifically-accepted designation for a range of <<FREQUENCY>>s within the electromagnetic spectrum; the electromagnetic band. ENUMERATION   334
EM_EVAPORATIVE_DUCT_HEIGHT The <<HEIGHT_AGL>> of the top of a <ELECTROMAGNETIC_REFRACTIVE_EVAPORATIVE_DUCT>. REAL LENGTH 335
EM_POLARIZATION_TYPE The type(s) of electromagnetic polarization established by an <AERIAL> of an emitter and/or a receiver. ENUMERATION   336
EM_PROPAGATION_CONDITION The type of condition causing variation in the propagation path of electromagnetic energy due to interaction of the emitted energy with the vertical density gradient of the <ATMOSPHERE>. ENUMERATION   337
EM_PULSE_DURATION The quantity of time (duration) of an electromagnetic pulse, as measured between the half-power points. REAL TIME 338
EM_PULSE_PEAK_POWER The peak power of an electromagnetic pulse. REAL POWER 339
EM_PULSE_TOTAL_ENERGY The total energy of an electromagnetic pulse. REAL ENERGY 340
EM_TRANSMISSION_LOSS The electromagnetic <<TRANSMISSION_LOSS>>. REAL FIELD_OR_POWER_LEVEL_DIFF 341
EMISSIVITY The ratio of the power emitted by an <OBJECT> at a given <<TEMPERATURE>> to the power emitted if the body obeyed Planck's radiation law (black body emission); the emissivity. REAL PURE_NUMBER 342
EMITTANCE_AZIMUTH_GEODETIC The <<VECTOR_AZIMUTH_GEODETIC>> toward which light is emitted (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 343
EMITTANCE_AZIMUTH_LOCAL The <<VECTOR_AZIMUTH_LOCAL>> toward which light is emitted (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 344
EMITTANCE_AZIMUTH_MAGNETIC The <<VECTOR_AZIMUTH_MAGNETIC>> toward which light is emitted (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 345
EMITTANCE_ELEV_ANGLE-
_HORIZONTAL 		The <<VECTOR_ELEV_ANGLE_HORIZONTAL>> toward which light is emitted (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 346
EMITTANCE_ELEV_ANGLE_LOCAL The <<VECTOR_ELEV_ANGLE_LOCAL>> toward which light is emitted (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 347
EMITTED_DIFFUSE_LIGHT_SCALED-
_INTENSITY 		A number between 0 and 1 inclusive representing that linearly-scaled fractional light intensity that leaves the <SURFACE> of an <OBJECT> in all <DIRECTION>s with equal magnitude. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 348
EMITTED_SPECULAR_LIGHT-
_SCALED_INTENSITY 		A number between 0 and 1 inclusive representing that linearly-scaled fractional light intensity that leaves the <SURFACE> of an <OBJECT> in a particular <DIRECTION>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 349
ENCLOSURE_MAXIMUM_HEIGHT The maximum vertical distance from <FLOOR> to <ROOM_CEILING> of a <BUILDING> compartment (for example: a <ROOM> and/or a <FLOOR_CRAWL_SPACE>; the enclosure maximum height. REAL LENGTH 350
ENCLOSURE_MINIMUM_HEIGHT The minimum vertical distance from <FLOOR> to <ROOM_CEILING> of a <BUILDING> compartment (for example: a <ROOM> and/or a <FLOOR_CRAWL_SPACE>; the enclosure maximum height. REAL LENGTH 351
ENGINE_SMOKE_RATE The <<SMOKE_RATE_FRACTION>> of a motor/engine/propulsion <SYSTEM> in an <OBJECT>. REAL PURE_NUMBER 352
ENGINEER_TRENCH_TYPE The type of an <ENGINEER_TRENCH>. ENUMERATION   353
ENTRANCE_AND_OR_EXIT_COUNT The number of <STRUCTURE_ENTRANCE_AND_OR_EXIT>s of a <STRUCTURE>; the entrance and/or exit count. COUNT   354
ENTRANCE_COUNT The number of <STRUCTURE_ENTRANCE>s of a <STRUCTURE>; the entrance count. COUNT   355
EXIT_COUNT The number of <STRUCTURE_EXIT>s of a <STRUCTURE>; the exit count. COUNT   358
EXPLOSIVE_MINE_DENSITY The areal density of <EXPLOSIVE_MINE>s within a <MINEFIELD>. REAL AREAL_ENTITY_DENSITY 359
EXPLOSIVE_MINE_TYPE The type of an <EXPLOSIVE_MINE>. ENUMERATION   360
EXTERIOR_LIGHTING_INTENSITY A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the general external <LIGHTING> of an <OBJECT>. Zero means unlit and one means maximum intensity. REAL PURE_NUMBER 361
EXTERIOR_WALL_CONSTRUCTION-
_TYPE 		The type of <MATERIAL> and/or techniques used to construct an <EXTERIOR_WALL>. ENUMERATION   362
EXTERIOR_WALL_FORTIFICATION The <MATERIAL>s and/or techniques used to fortify an <EXTERIOR_WALL>. ENUMERATION   363
EXTERIOR_WALL_THICKNESS The <<THICKNESS>> of an <EXTERIOR_WALL>. REAL LENGTH 364
EXTERNAL_PAINT_SCHEME The applied external paint scheme of an <OBJECT>. ENUMERATION   365
EXTERNAL_WINDOW_COVERING The type of the external covering of a <WINDOW>. ENUMERATION   366
EXTINCTION_COEFFICIENT For radiation propagating through a medium, the fractional depletion of <<RADIANCE>> per unit path length; the extinction coefficient loss. REAL LINEAR_ENERGY_TRANSFER 367
EXTINCTION_COEFFICIENT_LEVEL The vertical displacement above a <SURFACE_DATUM> identified by an <<ATM_VERTICAL_REFERENCE>> at which a given value of <<EXTINCTION_COEFFICIENT>> occurs; the extinction coefficient level. REAL GEOPOTENTIAL_ENERGY_LENGTH 368
EXTINCTION_COEFFICIENT-
_WAVELENGTH 		The electromagnetic <<WAVELENGTH>> for an <<EXTINCTION_COEFFICIENT>>. REAL LENGTH 369
EXTRACTION_MINE_TYPE The type of an <EXTRACTION_MINE>. ENUMERATION   370
EXTREME_HIGH_AIR_TEMPERATURE The maximum (extreme) of a <SET> of <<MAXIMUM_AIR_TEMPERATURE>>s for a <<TIME_QUANTITY>>; a maximum high air temperature. REAL THERMO_TEMPERATURE 371
EXTREME_LOW_AIR_TEMPERATURE The minimum (extreme) of a <SET> of <<MINIMUM_AIR_TEMPERATURE>>s for a <<TIME_QUANTITY>>; a minimum low air temperature. REAL THERMO_TEMPERATURE 372

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