Table 6.24 -- EDCS attributes whose label begins with T
| Label | Definition | Attribute value type | EQ label | Code |
| TANKER_DENSITY | The areal density of tanker <WATER_SURFACE_VESSEL>s. A tanker <WATER_SURFACE_VESSEL> is characterized by a gross weight greater than 907 000 kilograms (approximately 1 000 tons), a dead weight less than or equal to 159 000 kilograms (approximately 175 000 tons), and a <<LENGTH>> of approximately 18 to 300 metres). | REAL | AREAL_ENTITY_DENSITY | 1390 |
| TAXIWAY_LIGHTING_INTENSITY | A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the <LIGHTING> on a <TAXIWAY>. Zero means unlit and one means maximum intensity. | REAL | PURE_NUMBER | 1391 |
| TELESCOPE_TYPE | The type of a <TELESCOPE>. | ENUMERATION | 1392 | |
| TEMPERATURE_CONTRAST | The thermal contrast of an <OBJECT> expressed as the difference between the temperature of the <OBJECT> and the temperature of the apparent background. | REAL | THERMO_TEMPERATURE | 1393 |
| TEMPERATURE_EXTREME | The type of extreme temperature ever recorded at a specific <LOCATION>, for a specific <REGION>, or for a specific period for a specific <LOCATION> or <REGION>. | ENUMERATION | 1394 | |
| TEMPERATURE_INVRSN_LAYER_BASE | The vertical distance to the base of a <TEMPERATURE_INVERSION_LAYER> from a reference <SURFACE> identified by an <<ATM_VERTICAL_REFERENCE>>. | REAL | LENGTH | 1395 |
|
TEMPERATURE_INVRSN_LAYER- _LAPSE_RATE |
The <<TEMPERATURE_LAPSE_RATE>> in a <TEMPERATURE_INVERSION_LAYER>. | REAL | LINEIC_THERMO_TEMP_GRADIENT | 1396 |
| TEMPERATURE_INVRSN_LAYER_TOP | The vertical distance to the top of a <TEMPERATURE_INVERSION_LAYER> from a reference <SURFACE> identified by an <<ATM_VERTICAL_REFERENCE>>. | REAL | LENGTH | 1397 |
| TEMPERATURE_LAPSE_RATE | The rate of change as a function of <<HEIGHT_AGL>> of the <<AIR_TEMPERATURE>>. | REAL | LINEIC_THERMO_TEMP_GRADIENT | 1398 |
| TEMPERATURE_QUALITY | The quality of an <<AIR_TEMPERATURE>> observation. | ENUMERATION | 1399 | |
| TENT_DEPLOYMENT_FRACTION | A number between 0 and 1 inclusive representing the linearly-scaled fractional opening of the deployable or extension <TENT> of an <OBJECT>. Zero means fully stowed/retracted/closed and one means fully deployed. | REAL | PURE_NUMBER | 1400 |
| TERRAIN_CHANNEL_WIDTH | The predominant distance across the bottom of a localized <TERRAIN_DEPRESSION> measured perpendicular to its <CENTRE_LINE>; the terrain channel width. | REAL | LENGTH | 1401 |
| TERRAIN_CREST_WIDTH | The predominant distance across the crest of a localized <RIDGE> (for example: a <DAM> or a <PARAPET>) on the <TERRAIN>, as measured perpendicular to its <CENTRE_LINE>; terrain crest width. | REAL | LENGTH | 1402 |
| TERRAIN_ELEVATION | The elevation of the <TERRAIN> at a <LOCATION> with respect to a specified <SURFACE_DATUM>. | REAL | LENGTH | 1403 |
| TERRAIN_GAP_WIDTH | The minimum horizontal bridging distance between the banks of a localized <TERRAIN_DEPRESSION>, as measured perpendicular to its <CENTRE_LINE>; the terrain gap width. | REAL | LENGTH | 1404 |
| TERRAIN_MORPHOLOGY_DESCRIPTION | A description of the morphology of the <TERRAIN>. | STRING | 1405 | |
| TERRAIN_MORPHOLOGY_TYPE | The type of the morphology of the <TERRAIN>. | ENUMERATION | 1406 | |
| TERRAIN_OBSTACLE_TYPE | The type of a <TERRAIN_OBSTACLE>. | ENUMERATION | 1407 | |
|
TERRAIN_ROUGHNESS_ROOT_MEAN- _SQUARE |
The roughness of the <TERRAIN> calculated using the RMS value of <<TERRAIN_ELEVATION>>s measured at a spatial frequency of approximately 0,3 metres after removing the trend surface. | REAL | LENGTH | 1408 |
|
TERRAIN_ROUTE_SLOPE_SEGMENT- _LENGTH |
The length of a <TERRAIN_TRANSPORTATION_ROUTE> segment having a slope (rise/run) greater than 0,07 for a <ROAD>, or greater than 0,03 for a <RAILWAY>. | REAL | LENGTH | 1409 |
| TERRAIN_ROUTE_TYPE | The type of a <TERRAIN_TRANSPORTATION_ROUTE>. | ENUMERATION | 1410 | |
|
TERRAIN_ROUTE_USABLE_WEATHER- _TYPE |
The type of weather conditions under which an <TERRAIN_TRANSPORTATION_ROUTE> is usable. | ENUMERATION | 1411 | |
| TERRAIN_SLOPE | The slope (rise/run) of the <TERRAIN>. | REAL | PURE_NUMBER | 1412 |
| TERRAIN_SURFACE_MARK_TYPE | The type of mark (for example: a rut, charring by fire, or ploughin) present that indicate disturbance to the naturally occurring <SURFACE> of the <LAND>; the terrain surface mark type. | ENUMERATION | 1413 | |
| TERRAIN_TRAFFICABILITY_COARSE | A coarse measure of the trafficability of the <TERRAIN> as it affects the movement of ground forces (for example: a military unit, a military <VEHICLE>, or infantry). | ENUMERATION | 1414 | |
| TERRAIN_TRAFFICABILITY_FINE | A fine measure of the trafficability of the <TERRAIN> as it affects the movement of ground forces (for example: a military unit, a military <VEHICLE>, or infantry). | ENUMERATION | 1415 | |
| TERRAIN_TRAFFICABILITY_MEDIUM | A medium measure of the trafficability of the <TERRAIN> as it affects the movement of ground forces (for example: a military unit, a military <VEHICLE>, or infantry). | ENUMERATION | 1416 | |
|
TERRAIN_TRANSPORTATION_ROUTE- _SURFACE_TYPE |
The composition of the <SURFACE> of a <TERRAIN_TRANSPORTATION_ROUTE>. | ENUMERATION | 1417 | |
| TERRAIN_TRNSP_MEDIAN_PRESENT | An indication that a median divider is present between multiple <ROAD_LANE>s or tracks in a <TERRAIN_TRANSPORTATION_ROUTE>. | BOOLEAN | 1418 | |
| TERRAIN_TRNSP_MEDIAN_WIDTH | The <<WIDTH>> of the divider between multiple <ROAD_LANE>s or tracks in a <TERRAIN_TRANSPORTATION_ROUTE>. | REAL | LENGTH | 1419 |
|
TERTIARY_AXIS_VELOCITY- _COMPONENT |
The velocity component of an <OBJECT> along the tertiary axis of a defined spatial reference frame. | REAL | SPEED | 1420 |
| TEXTUAL_OBJECT_IDENTIFIER | The textual identifier (often termed the "number") of an <OBJECT>. | STRING | 1421 | |
| THERMAL_CONDUCTIVITY | The ratio of thermal flux density through a <SURFACE> to the temperature gradient across that <SURFACE> for a surface within a <MATERIAL> or <OBJECT>; the thermal conductivity. | REAL | THERMAL_CONDUCTIVITY | 1422 |
| THERMAL_THICKNESS | The thermal thickness (effective depth) of temperature variation within an <OBJECT> over the diurnal cycle. Diurnal thermal fluctuations cease around three to five diurnal depths. | REAL | LENGTH | 1423 |
| THERMOCLINE_TEMP_GRADIENT | The temperature gradient within a thermocline. For purposes of this definition, a thermocline is that <REGION> in a thermally stratified <WATER_BODY> in which the <<WATER_BODY_TEMPERATURE>> decrease with depth is greater than that of the <WATER> above and below it. | REAL | LINEIC_THERMO_TEMP_GRADIENT | 1424 |
|
THERMOCLINE_TEMP_GRADIENT- _STD_DEV |
The standard deviation of a <SET> of <<THERMOCLINE_TEMP_GRADIENT>> measurements. | REAL | LINEIC_THERMO_TEMP_GRADIENT | 1425 |
| THICKNESS | The distance between two opposite <SURFACE>s of an <OBJECT>, usually the distance of smallest measure; the thickness. | REAL | LENGTH | 1426 |
| THUNDERSTORM_INTENSITY | The intensity of a <THUNDERSTORM> as determined by its <<PRECIPITATION_RATE>>. | ENUMERATION | 1427 | |
|
THUNDERSTORM_MAXIMUM_WIND- _SPEED |
The maximum <<WIND_SPEED>> measured within a <THUNDERSTORM>. | REAL | SPEED | 1428 |
| THUNDERSTORM_PRESENT | An indication that a <THUNDERSTORM> is present. | BOOLEAN | 1429 | |
| THUNDERSTORM_PROBABILITY | The probability of the occurrence of a <THUNDERSTORM>. | REAL | PURE_NUMBER | 1430 |
| THUNDERSTORM_TOP_ALTITUDE | The <<ALTITUDE_MSL>> of the top of a <THUNDERSTORM>. | REAL | LENGTH | 1431 |
| TIDE_INFLUENCED | An indication that an <OBJECT> is affected by the <TIDE>. | BOOLEAN | 1432 | |
| TIDE_LEVEL | The <<ALTITUDE_MSL>> of a <WATER_BODY_SURFACE> influenced by the <TIDE>; the tide level. | REAL | LENGTH | 1433 |
| TIME_COORDINATE | The coordinate value for a defined temporal reference frame; the time coordinate. | REAL | TIME | 1434 |
| TIME_DIVISION_WITHIN_DAY | The division of the day (one of several) marked by the passage of the <SUN> through its diurnal cycle; the time division within the day. | ENUMERATION | 1435 | |
| TIME_FORMAT | The format of a time of the day. | ENUMERATION | 1436 | |
| TIME_PERIOD | A period of time; formatted as specified by <<TIME_PERIOD_FORMAT>>. | CONSTRAINED_STRING | 1437 | |
| TIME_PERIOD_FORMAT | The format of a period of time. | ENUMERATION | 1438 | |
| TIME_QUANTITY | A quantity of time (period). | REAL | TIME | 1439 |
| TOP_LAYER_SOIL_TEMPERATURE | The temperature of the <SOIL> between zero and five centimetres below the <SURFACE> of the <TERRAIN>; the top layer soil temperature. | REAL | THERMO_TEMPERATURE | 1440 |
| TOP_WIDTH | The <<WIDTH>> of an <OBJECT> at its top. | REAL | LENGTH | 1441 |
| TOPMARK_SHAPE | The shape of a <TOPMARK>. | ENUMERATION | 1442 | |
| TOPMARK_TYPE | The type of a <TOPMARK>. | ENUMERATION | 1443 | |
| TOTAL_CLOUD_COVER_CATEGORY | A category describing the <<TOTAL_CLOUD_COVERAGE>>. | ENUMERATION | 1444 | |
| TOTAL_CLOUD_COVERAGE | A number between 0 and 1 representing the linearly-scaled fraction of the sky covered by visible <CLOUD>s; the total cloud coverage. Zero means there are no visible <CLOUD>s and one means the sky is completely covered. | REAL | PURE_NUMBER | 1445 |
| TOTAL_ELECTRON_CONTENT | The maximum equivalent quantity of free electrons vertically above a <LOCATION>; the total electron count. | REAL | AREAL_ENTITY_DENSITY | 1446 |
| TOTAL_SNOW_ICE_DEPTH | The total depth of <SNOW> and/or <ICE> on the <TERRAIN>. | REAL | LENGTH | 1447 |
|
TOTAL_SNOW_ICE_DEPTH- _EQUIVALENT |
The depth of the liquid <WATER> that is equivalent in content to the <<TOTAL_SNOW_ICE_DEPTH>>. | REAL | LENGTH | 1448 |
| TOURISTIC_NAME | A touristic name for an <OBJECT> that exists in addition to a geographic name. | STRING | 1449 | |
| TOWED_VEHICLE_TYPE | The type of a <TOWED_VEHICLE>. | ENUMERATION | 1450 | |
| TOWER_TYPE | The purpose of a <TOWER>. | ENUMERATION | 1451 | |
|
TRANSMISSION_ATTENUATION- _GRADIENT |
The negative of the propagation range gradient of the ratio of transmitted to incident flux, generally expressed as a decibel power ratio per length of range of an <OBJECT>; the transmission attenuation gradient. | REAL | POWER_LEVEL_DIFF_LEN_GRADIENT | 1452 |
| TRANSMISSION_LOSS | The negative of the ratio of energy density at an end <LOCATION> to that at a starting <LOCATION>, generally expressed in decibels; the transmission loss. For acoustic transmission loss, the starting <LOCATION> is one metre from the acoustic centre of the source. | REAL | FIELD_OR_POWER_LEVEL_DIFF | 1453 |
| TRANSMISSIVITY | The negative of the ratio of transmitted to incident flux from one traversal through a homogeneous <MATERIAL> or <OBJECT>, generally expressed in decibels; the transmissivity. | REAL | FIELD_OR_POWER_LEVEL_DIFF | 1454 |
| TRANSMITTED_AZIMUTH_GEODETIC | The <<VECTOR_AZIMUTH_GEODETIC>> toward which light is transmitted (the <DIRECTION> of the Poynting vector). | REAL | PLANE_ANGLE | 1455 |
| TRANSMITTED_AZIMUTH_LOCAL | The <<VECTOR_AZIMUTH_LOCAL>> toward which light is transmitted (the <DIRECTION> of the Poynting vector). | REAL | PLANE_ANGLE | 1456 |
| TRANSMITTED_AZIMUTH_MAGNETIC | The <<VECTOR_AZIMUTH_MAGNETIC>> toward which light is transmitted (the <DIRECTION> of the Poynting vector). | REAL | PLANE_ANGLE | 1457 |
|
TRANSMITTED_ELEV_ANGLE- _HORIZONTAL |
The <<VECTOR_ELEV_ANGLE_HORIZONTAL>> toward which light is transmitted (the <DIRECTION> of the Poynting vector). | REAL | PLANE_ANGLE | 1458 |
| TRANSMITTED_ELEV_ANGLE_LOCAL | The <<VECTOR_ELEV_ANGLE_LOCAL>> of the transmitted light <DIRECTION> vector (unit Poynting vector). | REAL | PLANE_ANGLE | 1459 |
| TRANSPORT_CAPACITY | The capacity of a <VEHICLE> for the transport and/or storage of <CARGO>. | REAL | MASS | 1460 |
| TRANSPORT_HELICOPTER_TYPE | The design series of a <TRANSPORT_HELICOPTER>. | ENUMERATION | 1461 | |
| TRANSPORT_LANDING_CRAFT_TYPE | The type of a <LANDING_CRAFT> designed for transport dock operations. | ENUMERATION | 1462 | |
| TRANSPORT_WINGED_AIRCRAFT_TYPE | The type of a <TRANSPORT_WINGED_AIRCRAFT>. | ENUMERATION | 1463 | |
| TRANSPORTATION_BED_HEIGHT | The height of the bed of a <TERRAIN_TRANSPORTATION_ROUTE> above the surrounding <TERRAIN>. | REAL | LENGTH | 1464 |
| TRANSPORTATION_ROUTE_LENGTH | The total distance along a <TRANSPORTATION_ROUTE> between two <LOCATION>s. | REAL | LENGTH | 1465 |
| TRANSPORTATION_USE | The type of primary user, function, or authority of a transportation <SYSTEM>. | ENUMERATION | 1466 | |
| TREE_CANOPY_BOTTOM_HEIGHT | The height from the <PLANETARY_SURFACE> to the lowest significant canopy branch of the bottom of the canopy of a <TREE>. | REAL | LENGTH | 1467 |
| TREE_CANOPY_LEVEL_COUNT | The number of levels of canopy in a <TREED_TRACT> or <FOREST>; the tree canopy level count. | COUNT | 1468 | |
| TREE_COUNT | The number of <TREE>s; the tree count. | COUNT | 1469 | |
| TREE_SPACING | The mean distance between centres of adjacent <TREE>s. | REAL | LENGTH | 1470 |
| TREE_TYPE | The type of a <TREE>, or <SET> of <TREE>s. | ENUMERATION | 1471 | |
| TROPOPAUSE_ALTITUDE | The <<ALTITUDE_MSL>> of the <TROPOPAUSE>. | REAL | LENGTH | 1472 |
| TROPOPAUSE_PRESENT | An indication that the <TROPOPAUSE> is present. | BOOLEAN | 1473 | |
| TROPOPAUSE_PRESSURE | The <<ATM_PRESSURE>> at the <TROPOPAUSE>. | REAL | PRESSURE | 1474 |
| TROPOPAUSE_TEMPERATURE | The <<AIR_TEMPERATURE>> at the <TROPOPAUSE>. | REAL | THERMO_TEMPERATURE | 1475 |
| TRUCK_LOAD_CLASS | The load class of a <TRUCK>. | ENUMERATION | 1476 | |
| TSS_IMO_ADOPTED | An indication that a marine <TSS_SYSTEM> has been adopted by the IMO. | BOOLEAN | 1477 | |
| TUNNEL_CROSS_SECTION | The characteristic cross-sectional shape of a <TUNNEL> when viewed from the ends. | ENUMERATION | 1478 | |
| TURBULENCE_BASE_ALTITUDE | The <<ALTITUDE_MSL>> of the lower <SURFACE> of a layer of <ATMOSPHERE> that is turbulent to <AIRCRAFT>. | REAL | LENGTH | 1479 |
| TURBULENCE_FREQUENCY | The rate of occurrence (frequency) of <AIRCRAFT> turbulence. | ENUMERATION | 1480 | |
| TURBULENCE_INTENSITY | The intensity of <AIRCRAFT> turbulence. | ENUMERATION | 1481 | |
| TURBULENCE_TOP_ALTITUDE | The <<ALTITUDE_MSL>> of the upper <SURFACE> of a layer of <ATMOSPHERE> that is turbulent to <AIRCRAFT>. | REAL | LENGTH | 1482 |
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