Table 6.22 -- EDCS attributes whose label begins with R

Label Definition Attribute value type EQ label Code
RADAR_BEACON_FREQUENCY The specific <<FREQUENCY>> of a radar transponder <BEACON>. REAL FREQUENCY 1025
RADAR_CROSS_SECTION The ratio of the radar power (or flux) per unit solid angle reflected from an <OBJECT> toward a sensor and the incident power density times 4π; the radar cross section. REAL AREA 1026
RADAR_REFLECTOR_ANGLE The <<GEODETIC_AZIMUTH>> of the radar reflective side of an <OBJECT>; the radar reflector angle. REAL PLANE_ANGLE 1027
RADAR_REFLECTOR_PRESENT An indication that an <OBJECT> has an associated radar reflector <DEVICE>; radar reflector present. BOOLEAN   1028
RADAR_SIGNIFICANCE_FACTOR The type of an <OBJECT> based on the predominant exposed <MATERIAL> of the <SURFACE> of the <OBJECT>; the radar significance factor. ENUMERATION   1029
RADAR_STATION_TYPE The type of a <RADAR_STATION>. ENUMERATION   1030
RADAR_TERRAIN_CLUTTER The radar surface clutter expressed in mean <<RADAR_CROSS_SECTION>> per unit <<AREA>> of <TERRAIN>. REAL PURE_NUMBER 1031
RADAR_TRANSPONDER_TYPE The type of a radar transponder <BEACON>. ENUMERATION   1032
RADAR_WATER_BODY_SURFACE-
_CLUTTER
The radar surface clutter expressed in mean <<RADAR_CROSS_SECTION>> per unit <<AREA>> of <WATER_BODY_SURFACE>. REAL PURE_NUMBER 1033
RADIANCE The radiant power per unit source <<AREA>> per unit solid angle; the radiance. REAL RADIANCE 1034
RADIANCE_FLUCTUATION_24_HOUR The amount of fluctuation (peak amplitude) of the<<RADIANCE>> (or luminance) of a <SURFACE> over a twenty-four hour <<TIME_QUANTITY>>, expressed as a value from 0 to 255. REAL PURE_NUMBER 1035
RADIANCE_PHASE The angular phase of <<RADIANCE>> amplitude assuming a sine wave fluctuation. REAL PLANE_ANGLE 1036
RADIANT_FLUX_DENSITY The energy flux through a unity <SURFACE>; the radiant flux density or net flux. The same quantity is designated as either the irradiance (when it is a received flux) or the exitance (when it is an emitted flux). REAL IRRADIANCE 1037
RADIATIVE_FLUX_DOWNWELLING Short <<WAVELENGTH>> (less than 4 microns) <<RADIANT_FLUX_DENSITY>> incident downward on a <PLANETARY_SURFACE> as direct solar radiation; the radiative flux downwelling. REAL IRRADIANCE 1038
RADIATIVE_FLUX_UPWELLING The net (upward minus downward) long <<WAVELENGTH>> (greater than 4 microns) thermal <<RADIANT_FLUX_DENSITY>> from a <PLANETARY_SURFACE>; the radiative flux upwelling. REAL IRRADIANCE 1039
RADIO_STATION_TYPE The type of a marine radio <COMMUNICATION_STATION>. ENUMERATION   1040
RADIOLOGIC_AGENT_ATM-
_CONCENTRATION
The concentration of a radiologic agent suspended in an <ATMOSPHERE>. REAL VOLUMIC_MASS 1041
RADIOLOGIC_AGENT_SURFACE-
_CONCENTRATION
The concentration of a radiologic agent contained in a layer on the <SURFACE> of an <OBJECT>. REAL SURFACE_DENSITY 1042
RADIOLOGIC_AGENT_TYPE The type of a radiologic agent that can kill, seriously injure, or incapacitate <HUMAN>s or <NON_HUMAN_ANIMAL>s through its physiological properties. ENUMERATION   1043
RADIOLOGIC_MASS The <<MASS>> of a radiologic substance contained in an <OBJECT>. REAL MASS 1044
RADIUS The radius of an <OBJECT>. REAL LENGTH 1045
RAILING_TYPE The type of a railing. ENUMERATION   1046
RAILWAY_GAUGE The distance between a single pair of rails of a <RAILWAY_TRACK> measured along the shortest distance from inside rail to inside rail; the railway gauge. REAL LENGTH 1047
RAILWAY_GAUGE_CATEGORY The category of a <<RAILWAY_GAUGE>>. ENUMERATION   1048
RAILWAY_MAXIMUM_AXLE_LOAD The maximum load allowable on any single axle of a <RAIL_WAGON> or <LOCOMOTIVE_ENGINE>. REAL MASS 1049
RAILWAY_MAXIMUM_LOAD The maximum load allowable on a <RAILWAY>. REAL MASS 1050
RAILWAY_POWER_SOURCE The source of electrical power for a <RAILWAY>. ENUMERATION   1051
RAILWAY_TRACK_ARRANGEMENT The arrangement of <RAILWAY_TRACK>s in both <DIRECTION>s on a single bed. ENUMERATION   1052
RAILWAY_TYPE The type of a <SYSTEM> of <RAILWAY>s used to support various transportation uses. ENUMERATION   1053
RAMP_DEPLOYED_POSITION A number between 0 and 1 inclusive representing the linearly-scaled fractional deployment of a <RAMP> or <GATE> of an <OBJECT>. Zero means fully stowed/retracted/closed and one means fully deployed. REAL PURE_NUMBER 1054
RAPID_CLASS In North America, the relative difficulty of traversing a <RAPID>, based on the Safety Code of American Whitewater; the rapid class. ENUMERATION   1055
RECEIVED_AMBIENT_LIGHT-
_SCALED_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional light intensity received by an <OBJECT> from all unlocalized sources. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1056
RECEIVED_DIFFUSE_LIGHT-
_SCALED_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional light intensity received by an <OBJECT> from the diffuse radiation leaving a particular localized source. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1057
RECEIVED_SPECULAR_LIGHT-
_SCALED_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional light intensity received by an <OBJECT> from the specular radiation leaving a particular localized source. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1058
RECOMMENDED_TRACK_TYPE The type of a recommended track. ENUMERATION   1059
RECORDING_DATE The date when the given information concerning the <OBJECT> was recorded, captured, edited, or deleted. The value is formatted as specified by <<DATE_FORMAT>> or by <<DATE_TIME_FORMAT>>. CONSTRAINED_STRING   1060
RECORDING_DATE_TYPE The type of a <<RECORDING_DATE>>. ENUMERATION   1061
REFLECTANCE_AZIMUTH_GEODETIC The <<VECTOR_AZIMUTH_GEODETIC>> toward which light is reflected (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 1062
REFLECTANCE_AZIMUTH_LOCAL The <<VECTOR_AZIMUTH_LOCAL>> toward which light is reflected (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 1063
REFLECTANCE_AZIMUTH_MAGNETIC The <<VECTOR_AZIMUTH_MAGNETIC>> toward which light is reflected (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 1064
REFLECTANCE_ELEV_ANGLE-
_HORIZONTAL
The <<VECTOR_ELEV_ANGLE_HORIZONTAL>> toward which light is reflected (the <DIRECTION> of the Poynting vector). REAL PLANE_ANGLE 1065
REFLECTANCE_ELEV_ANGLE_LOCAL The <<VECTOR_ELEV_ANGLE_LOCAL>> toward which light is reflected (the <DIRECTION> of the unit Poynting vector). REAL PLANE_ANGLE 1066
REFLECTANCE_ZENITH_ANGLE_LOCAL The angle at a <LOCATION> on a <SURFACE> between the vectors A and B, where A is the surface normal vector and B is the <DIRECTION> toward the sampling of radiation reflected from the <SURFACE> at that <LOCATION>. The positive sense is clockwise when looking in the <DIRECTION> of the cross product AxB. REAL PLANE_ANGLE 1067
REFRACTION_INDEX_IMAGINARY-
_PART
The imaginary part of a complex refraction index. The complex refraction index is the square root of the product of the complex relative permittivity and permeability of the <MATERIAL>. The imaginary part of the complex refraction index can also be derived from the attenuation index or absorption coefficient of the <MATERIAL>. REAL PURE_NUMBER 1068
REFRACTION_INDEX_REAL_PART The real part of a complex refraction index. The complex refraction index is the square root of the product of the complex relative permittivity and permeability of the <MATERIAL>. The real part of a complex refraction index can also be derived from the attenuation index or absorption coefficient of the <MATERIAL>. REAL PURE_NUMBER 1069
REGIONAL_STYLE The architectural style of a <STRUCTURE> based on the <REGION> of the <EARTH> where it is commonly used or other important characteristics; the regional style. ENUMERATION   1070
RELATIVE_HORIZONTAL_ACCURACY The horizontal accuracy of a <LOCATION> relative to another horizontal <LOCATION> expressed in units of length at 90% circular error. REAL LENGTH 1071
RELATIVE_HUMIDITY The ratio of vapour pressure to saturation vapour pressure, where vapour pressure is the pressure exerted by the molecules of water vapour and saturation vapour pressure is the pressure exerted by molecules of water vapour in <AIR> that has attained saturation; the relative humidity. REAL PURE_NUMBER 1072
RELATIVE_HUMIDITY_ERROR The error in a measurement of <<RELATIVE_HUMIDITY>> that is introduced by uncertainties. REAL PURE_NUMBER 1073
RELATIVE_HUMIDITY_MINIMUM-
_TEMPERATURE
The <<RELATIVE_HUMIDITY>> at the time of the lowest <<AIR_TEMPERATURE>> for the preceding twenty-four hours. REAL PURE_NUMBER 1074
RELATIVE_LOCATION The <LOCATION> of an <OBJECT> relative to the surrounding <REGION>. ENUMERATION   1075
RELATIVE_ORIENTATION_ANGLE The angular distance about the vertical axis of an <OBJECT> measured in the local horizontal plane from the positive x-axis of an external (relative) coordinate system clockwise (viewed from above) to the major (longitudinal) axis of the <OBJECT>; the relative orientation angle. REAL PLANE_ANGLE 1076
RELATIVE_VERTICAL_ACCURACY The vertical accuracy of a <LOCATION> relative to another vertical <LOCATION>, expressed in units of length at 90% linear error. REAL LENGTH 1077
RELEASABILITY_RESTRICTIONS The releasability restrictions of information about an <OBJECT>. STRING   1078
RELIGIOUS_DESIGNATION A designation denoting a religion or system of belief; the religious designation. ENUMERATION   1079
RESERVOIR_TYPE The manner that a <RESERVOIR> contains <WATER>. ENUMERATION   1080
REVERBERATION_NOISE_POWER-
_LEVEL
The power level of acoustic energy in a <WATER_BODY> due to reflection of active acoustic emissions from non-target <OBJECT>s; the reverberation noise. REAL PRESSURE_POWER_LEVEL 1081
REYNOLDS_NUMBER The non-dimensional ratio of the inertial force to the viscous force in fluid motion, usually ranging between 0,0 and 1,0 x 105; the Reynolds number. REAL PURE_NUMBER 1082
RF_DIRECTIVITY A characterization of the <DIRECTION>s from an <OBJECT> that produce the greatest reflectivity potential to electromagnetic radiation; the radio frequency directivity. ENUMERATION   1083
RF_REFRACTIVE_INDEX_MODIFIED The index of refraction for the propagation of electromagnetic waves at radio <<FREQUENCY>>s in an <ATMOSPHERE> that has been modified to account for the curvature of a <PLANETARY_SURFACE>. The index of refraction is the ratio of the <<WAVELENGTH>> or phase velocity of an electromagnetic wave in a vacuum to that in the medium or substance. REAL PURE_NUMBER 1084
RGB_COLOUR_BLUE A number between 0 and 1 inclusive representing a linearly-scaled fraction specifying the blue component of a colour measurement in the RGB colour model. REAL PURE_NUMBER 1085
RGB_COLOUR_GREEN A number between 0 and 1 inclusive representing a linearly-scaled fraction specifying the green component of a colour measurement in the RGB colour model. REAL PURE_NUMBER 1086
RGB_COLOUR_RED A number between 0 and 1 inclusive representing a linearly-scaled fraction specifying the red component of a colour measurement in the RGB colour model. REAL PURE_NUMBER 1087
RIGHT_ABOVE_BANK_ANGLE The angle from the horizontal plane to the portion above the mean level of the <WATER_BODY_SURFACE> of the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE>. REAL PLANE_ANGLE 1088
RIGHT_ABOVE_BANK_SLOPE The <<TERRAIN_SLOPE>> of the portion above the mean level of the <WATER_BODY_SURFACE> of the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE>. REAL PURE_NUMBER 1089
RIGHT_BANK_HEIGHT The <<HEIGHT>> of the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE> measured from the mean level of the <WATER> to the first break in <<TERRAIN_SLOPE>> above the mean level of the <WATER>. REAL LENGTH 1090
RIGHT_BANK_SLOPE The <<TERRAIN_SLOPE>> of the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE> measured from the mean level of the <WATER> to the first accessible break in slope above the mean level of the <WATER>. REAL PURE_NUMBER 1091
RIGHT_BANK_SOIL_CONE_INDEX The <<SOIL_CONE_INDEX>> of a right <WATER_BODY_BANK>. REAL PRESSURE 1092
RIGHT_BANK_VEGETATION_DENSITY A number between 0 and 1 inclusive representing the linearly scaled fractional density of <VEGETATION> found on the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE> as a linearly-scaled fraction of bank <<AREA>>. REAL PURE_NUMBER 1093
RIGHT_BELOW_BANK_ANGLE The angle from the horizontal plane to the portion below the mean level of the <WATER_BODY_SURFACE> of the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE>, below the mean level of the <WATER>. REAL PLANE_ANGLE 1094
RIGHT_BELOW_BANK_SLOPE The <<TERRAIN_SLOPE>> of the portion below the mean level of the <WATER_BODY_SURFACE> of the right <WATER_BODY_BANK> (facing downstream) of a <WATERCOURSE>. REAL PURE_NUMBER 1095
RIGHT_TERRAIN_BANK_SLOPE The <<TERRAIN_SLOPE>> of the right bank of a <TERRAIN_SURFACE_OBJECT> (for example: a <TERRAIN_CUT> or an <EMBANKMENT>). REAL PURE_NUMBER 1096
RIP_CURRENT_PRESENT An indication that a <RIP_CURRENT> is present. BOOLEAN   1097
RIP_CURRENT_SPEED The <<WATER_CURRENT_SPEED>> of a <RIP_CURRENT>. REAL SPEED 1098
ROAD_INTERCHANGE_TYPE The physical arrangement of a <ROAD_INTERCHANGE>. ENUMERATION   1099
ROAD_JUNCTION_CONNECTIVITY The type of connectivity among <ROAD>s meeting at a junction. ENUMERATION   1100
ROAD_LANE_ADJACENCY The type of adjacency of a <ROAD_LANE>. ENUMERATION   1101
ROAD_LANE_CONTROL_TYPE The type of traffic control at the end of a <ROAD_LANE>. ENUMERATION   1102
ROAD_LANE_LIGHT_STATE The state of the traffic <LIGHT> at the end of a <ROAD_LANE>. ENUMERATION   1103
ROAD_LANE_PASSING The type of passing allowed on a <ROAD_LANE>. ENUMERATION   1104
ROAD_LANE_TURN The turning <DIRECTION> allowed at the end of a <ROAD_LANE>. ENUMERATION   1105
ROAD_LIGHTING_PRESENT An indication that a <ROAD> is illuminated by <STREET_LAMP>s; road lighting present. BOOLEAN   1106
ROAD_MINIMUM_TRAVELLED_WAY-
_WIDTH
The minimum <<WIDTH>> the traveled way of a <ROAD>. The value is the sum of the <<WIDTH>>s of included <ROAD_LANE>s. The <<WIDTH>>s of adjacent hard paved shoulders, <SIDEWALK>s, and other pathways are excluded. REAL LENGTH 1107
ROAD_SECOND_TRAVELLED_WAY-
_WIDTH
The <<WIDTH>> of a second travelled way that is the lesser <<WIDTH>> of the two travelled ways in a divided <ROAD>. The value is the sum of the <<WIDTH>>s of included <ROAD_LANE>s. The <<WIDTH>>s of adjacent hard paved shoulders, <SIDEWALK>s, and other pathways are excluded. REAL LENGTH 1108
ROAD_TOTAL_USABLE_WIDTH The total usable <<WIDTH>> of a travelled way of a <ROAD>. The value is the sum of the <<WIDTH>>s of included <ROAD_LANE>s, adjacent hard paved shoulders, unobstructed hard paved median, <SIDEWALK>s, and other pathways. The <<WIDTH>>s of parking lots, turn-offs, and unpaved medians are excluded. REAL LENGTH 1109
ROAD_TYPE The type of a <ROAD>. ENUMERATION   1110
ROCK_FORMATION_STRUCTURE The structure of a <ROCKY_OUTCROP> or other formation of <ROCK>s. ENUMERATION   1111
ROLL_ANGLE The angular distance about the forward axis of an <OBJECT> measured in the local vertical plane from the local vertical clockwise to the vertical axis of the <OBJECT>. The forward axis of the <OBJECT> is the axis that passes through the <OBJECT> centre and is directed towards/through the forward part or <SURFACE> (front) of the <OBJECT>. Clockwise rotation about the forward axis (the axis of roll) is determined in the <DIRECTION> of the front of the <OBJECT> (right hand rule). The vertical axis of the <OBJECT> is normal to its forward axis. REAL PLANE_ANGLE 1112
ROLLING_STOCK_TYPE The type of a rolling-stock. ENUMERATION   1113
ROOF_ASSEMBLY_TYPE The type of a <ROOF_ASSEMBLY>. ENUMERATION   1114
ROOF_COVER_FRACTION A number between 0 and 1 inclusive representing the linearly-scaled areal fraction of a <REGION> of <LAND> that is covered by <ROOF>s. Zero means no <ROOF>s are present and one means the <REGION> of <LAND> is completely covered. REAL PURE_NUMBER 1115
ROOF_FRAMING_TYPE The framing type of a <ROOF>. ENUMERATION   1116
ROOF_LOAD_BEARING_CAPACITY The maximum load per unit <<AREA>> that a <ROOF> can support; the load bearing capacity. REAL SURFACE_DENSITY 1117
ROOF_PREDOMINANT_PATTERN The predominant visual pattern of the <SURFACE> of a <ROOF>. The value usually describes the shape and arrangement of shingles, but may also describe smooth, corrugated, and gravel <ROOF>s. ENUMERATION   1118
ROOF_PREDOMINANT_SURFACE-
_MATERIAL
The predominant outermost <MATERIAL> of which the <SURFACE> of a <ROOF> is constructed. ENUMERATION   1119
ROOF_SHAPE The shape of a <ROOF>. ENUMERATION   1120
ROOF_SHEATHING_TYPE The type of <MATERIAL> overlaid on the frame of a <ROOF> to which the roofing <MATERIAL> is then attached; the roof sheathing type. ENUMERATION   1121
ROOF_STYLE The architectural style of a <ROOF>. ENUMERATION   1122
ROOM_CEILING_CONSTRUCTION_TYPE The type of <MATERIAL> and/or techniques used to construct a <ROOM_CEILING>. ENUMERATION   1123
ROUTE_ALTERNATIVE_DESIGNATION The alternative official designation assigned to a <TERRAIN_TRANSPORTATION_ROUTE>. Examples: "I-95", "A-1", "M-2". STRING   1124
ROUTE_CONSTRICTION_TYPE The type of a <ROUTE_CONSTRICTION>. ENUMERATION   1125
ROUTE_CROSSING_TYPE The type of shape attributed to the crossing of two or more <TRANSPORTATION_ROUTE>s. ENUMERATION   1126
ROUTE_DESIGNATION The official designation assigned to a <TERRAIN_TRANSPORTATION_ROUTE>. Examples: "I-95", "M-2", "A-1". STRING   1127
ROUTE_EXPANSION_TYPE The type of a <ROUTE_EXPANSION>. ENUMERATION   1128
ROUTE_WEATHER_TYPE The weather conditions under which a <TERRAIN_TRANSPORTATION_ROUTE> is passable or remains open. ENUMERATION   1129
ROW_COUNT The number of rows comprising an <OBJECT>; the row count. COUNT   1130
ROW_DISTANCE The distance between each row comprising an <OBJECT>; may be either a mean value, or a constant value where rows are equally spaced. REAL LENGTH 1131
ROW_SPACING_INTERNAL The distance between the <COMPONENT>s within each row comprising an <OBJECT>. The distance may be either a mean value or a constant value when <COMPONENT>s are equally spaced within a row; the row spacing internal. REAL LENGTH 1132
RUBBLE_STABILITY The ability of <RUBBLE> to resist sliding or collapsing under stress; the rubble stability. ENUMERATION   1133
RUNWAY_APPROACH_ANGLE_LIGHT-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the angle of approach indicator <LIGHT>s (for example: VASI or PAPI) on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1134
RUNWAY_APPROACH_LIGHT-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the approach <LIGHT>s on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1135
RUNWAY_APPROACH_OIS_DISTANCE The section distance from the beginning of a <RUNWAY_APPROACH_OIS>. REAL LENGTH 1136
RUNWAY_CENTRE_LIGHT_INTENSITY A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the <LIGHT>s marking a <RUNWAY_CENTRE_LINE>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1137
RUNWAY_COUNT The number of <RUNWAY>s at an <AERODROME>; the runway count. COUNT   1138
RUNWAY_DISPLACED_THRESHOLD-
_DISTANCE
The distance from the <RUNWAY_ENDPOINT> to that point of the <RUNWAY> usable for landing; the displaced threshold distance. REAL LENGTH 1139
RUNWAY_EDGE_LIGHT_INTENSITY A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the edge <LIGHT>s on a <RUNWAY>. Zero means minimum visibility and one means maximum intensity. REAL PURE_NUMBER 1140
RUNWAY_END An indication of the <<TERRAIN_ELEVATION>> of the end of a <RUNWAY>. ENUMERATION   1141
RUNWAY_END_BEARING The horizontal angle that represents the magnetic heading from the near end of a <RUNWAY> to the far end as viewed from an approaching or departing <AIRCRAFT>. REAL PLANE_ANGLE 1142
RUNWAY_ENDPOINT_ELEVATION The elevation of a <RUNWAY_ENDPOINT>. REAL LENGTH 1143
RUNWAY_HIGH_END_IDENTIFIER The higher degree identification of a <RUNWAY>. The value is formatted in a Basic Latin string that begins with a two-character identifier ranging from 19-36, determined from the approach direction, derived from the <RUNWAY> magnetic heading (high end) rounded to the nearest ten arc degrees, and divided by ten; the runway high end identifier. Designated in accordance with appropriate host nation documents. Analyst derived <RUNWAY> numbers will use six arc degrees as the break off point for the next highest number. In the case of parallel runways, a third character is added to differentiate between left (L), right (R), centre (C), or STOL (S) <RUNWAY> positions. A fourth character, (T) True is added when the <RUNWAY> identifier and heading are true with no magnetic variation applied. CONSTRAINED_STRING   1144
RUNWAY_IDENTIFIER The identification of a <RUNWAY>. The value is formatted in a Basic Latin string that begins with a two-character identifier ranging from 01-36, derived from the <RUNWAY> geodetic heading, rounded to the nearest ten arc degrees and divided by ten. In the case of parallel <RUNWAY>s, a third character is added to differentiate between left (L), right (R), centre (C), or STOL (S) <RUNWAY> positions. CONSTRAINED_STRING   1145
RUNWAY_LIGHTING_INTENSITY A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the <LIGHTING> on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1146
RUNWAY_LOW_END_IDENTIFIER The lower degree identification of a <RUNWAY>. The value is formatted in a Basic Latin string that begins with a two-character identifier ranging from 01-18, determined from the approach direction, derived from the <RUNWAY> magnetic heading (low end) rounded to the nearest ten arc degrees and divided by ten; the runway low end identifier. Designated in accordance with appropriate host nation documents. Analyst derived <RUNWAY> numbers will use six arc degrees as the break off point for the next highest number. In the case of parallel <RUNWAY>s, a third character is added to differentiate between left (L), right (R), centre (C), and STOL (S) runway positions. A fourth character (T) True is added when the <RUNWAY> identifier and heading are true with no magnetic variation applied. CONSTRAINED_STRING   1147
RUNWAY_OIS_QUADRANT A number identifying a quadrant of a <RUNWAY> OIS as defined by the <RUNWAY_CENTRE_LINE> and a perpendicular to the <RUNWAY_CENTRE_LINE> intersecting at the centre point of the <RUNWAY>. The centre point of the <RUNWAY> is defined as falling midway between the <RUNWAY_ENDPOINT>s. Quadrant identifiers are assigned such that quadrants 1 and 2 are on one side and quadrants 3 and 4 are on the other side of the <RUNWAY_CENTRE_LINE>. Quadrant identifiers only apply to the following imaginary air navigation OISs of <RUNWAY>s: inner horizontal, conical, and outer horizontal. INDEX   1148
RUNWAY_POINT_ABEAM_TYPE The type of offline <OBJECT> to which the point on a <RUNWAY> is abeam. ENUMERATION   1149
RUNWAY_PRIMARY_APPROACH-
_TRANSITIONAL_OIS_SECTION
A number identifying a section of the imaginary <RUNWAY> air navigation primary approach transitional OIS. The <RUNWAY> primary approach transitional OIS is broken down into two groups of sections: (1) Those sections corresponding to (and lateral of) the <RUNWAY> primary OIS sections which are (a) the approximately 914,4 metres (3 000 feet) sections starting from the <RUNWAY_ENDPOINT>s and working inward, and (b) any middle section left over from (a); and (2) Those sections are lateral of the <RUNWAY> primary OIS and runway approach OIS, extending from the <RUNWAY> end outward. Each of these sections is numbered. INDEX   1150
RUNWAY_PRIMARY_OIS_SECTION A number identifying a section of the imaginary <RUNWAY> air navigation primary OIS. The <RUNWAY> primary OIS is broken down into sections: (a) the 60,96 metre (200 feet) sections of the <RUNWAY> primary OIS from the <RUNWAY_ENDPOINT>s and working outward, (b) the approximately 914,4 metres (3 000 feet) sections starting from the <RUNWAY_ENDPOINT>s and working inward, and (c) any middle section left over from (b). Each of these sections is numbered. INDEX   1151
RUNWAY_REIL_INTENSITY A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the end indicator <LIGHT>s on a <RUNWAY>. Zero means unlit and one means maximum intensity. REAL PURE_NUMBER 1152
RUNWAY_RELATIVE_POSITION The relative position of a <RUNWAY> for an approaching or departing <AIRCRAFT> to/from an <AERODROME>. ENUMERATION   1153
RUNWAY_STOP_BAR_LIGHT-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the stop bar <LIGHT>s on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1154
RUNWAY_STROBE_LIGHT_INTENSITY A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the strobe <LIGHT>s on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1155
RUNWAY_SURFACE_CONDITION The condition of the <SURFACE> of a <RUNWAY>. ENUMERATION   1156
RUNWAY_TAKEOFF_DISTANCE-
_AVAILABLE
The <<LENGTH>> of takeoff distance on a <RUNWAY> plus the <<LENGTH>> of the <RUNWAY_OVERRUN>, if available. REAL LENGTH 1157
RUNWAY_THRESHOLD_LIGHT-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the threshold <LIGHT>s on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1158
RUNWAY_TOUCH_DOWN_LIGHT-
_INTENSITY
A number between 0 and 1 inclusive representing the linearly-scaled fractional intensity of the touch down <LIGHT>s on a <RUNWAY>. Zero means minimum intensity and one means maximum intensity. REAL PURE_NUMBER 1159
RUNWAY_TOUCHDOWN_ZONE-
_ELEVATION
The highest elevation in the first 914,4 metres (3 000 feet) of the end of the usable landing <SURFACE> of a <RUNWAY>. REAL LENGTH 1160
RUNWAY_VISIBILITY The visibility along an identified <RUNWAY> determined from a specific point on the <RUNWAY> with the observer facing in the same <DIRECTION> as a pilot using the <RUNWAY>. ENUMERATION   1161
RUNWAY_VISUAL_RANGE The maximum horizontal distance down an identified <RUNWAY> that a pilot of an <AIRCRAFT> on the <RUNWAY_CENTRE_LINE> can see the surface <RUNWAY_MARKINGS> or the <LIGHT>s delineating the <RUNWAY> or identifying the <RUNWAY_CENTRE_LINE>; the runway visual range. REAL LENGTH 1162

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