Table 6.6 -- EDCS Attributes whose label begins with C

Label Definition Attribute value type EQ label Related concepts Code
CAB_LENGTH The length of the longer of two linear axes of the pedestal or cab. For a square object, measure either axis. For a round object, measure the diameter. REAL LENGTH   138
CABLE_TYPE The type of a cable. ENUMERATION     139
CALENDAR_DATE The calendar date; coded as specified by ISO 8601:1988, 5.2.1.1. STRING     140
CALM_SEA_STATE_FRACTION The fraction of sea state reports indicating calm sea state during the reporting time interval. REAL PURE_NUMBER   141
CAPACITY The capacity of an object; coded using a structured text approach, e.g., "100(cars)[per hour]" where the unit is in parentheses ( ) and a unit qualifier is in brackets [ ]. STRING     142
CASE_BURIAL The fraction of an equipment case that is buried beneath the ground, or ocean bottom, surface. The following interpretations may be applied: 0/4: On-surface, 2/4: Half-buried; 4/4: Completely buried. REAL PURE_NUMBER   143
CAVOK Indicates that CAVOK conditions prevail: (1) visibility is 10 kilometres or more; (2) there are no clouds below 1,5 kilometres or below the highest minimum sector altitude, whichever is greater; and (3) there are no cumulonimbus clouds, precipitation, thunderstorms, shallow fog, or low drifting snow present. LOGICAL     144
CENTER_FREQUENCY_BAND The centre frequency of a frequency band for which acoustic data were measured. REAL FREQUENCY   145
CHANGE_POINT_TYPE The category of an object associated with a point of change. ENUMERATION     146
CHARGED_PARTICLE_SPECIES The type of a charged particle. ENUMERATION     147
CHEMICAL_AGENT_TYPE The type of a chemical substance that can kill, seriously injure, or incapacitate a person or animal through its physiological properties. ENUMERATION     148
CHEMICAL_CLOUD_CONC The concentration of a chemical agent suspended in the atmosphere, e.g., as a cloud above the surface of an object such as the earth. REAL VOLUMIC_MASS   149
CHEMICAL_SURFACE_CONC The concentration of a chemical agent contained in a layer on the surface of an object. REAL SURFACE_DENSITY   150
CLASSIFICATION_NAME A character string representing an object, e.g., a grammalogue, index number, order or classification number. KEY     151
CLOUD_BASE_ALTITUDE The altitude of the lowest surface of a cloud, relative to a specified vertical datum. REAL LENGTH   152
CLOUD_CEILING_ALTITUDE The altitude above ground level of the lowest cloud or obscuring phenomena layer. REAL LENGTH   153
CLOUD_CEILING_METHOD The method used to determine the cloud ceiling. Ceiling is the altitude AGL of the lowest cloud or obscuring phenomena layer aloft with 5/8 or more summation total sky cover that may be predominantly opaque, or the vertical visibility into a surface-based obscuration. ENUMERATION     154
CLOUD_CVRG_CFLOS_CLIM The rate of historical total cloud coverage for a cloud free line of sight. REAL PURE_NUMBER EA HISTORICAL_CFLOS_CLIM 155
CLOUD_CVRG_TYPE_COUNT The quantity of occurrences of specific types of clouds. COUNT     156
CLOUD_PHASE The liquid/solid disposition of the cloud water content. ENUMERATION     157
CLOUD_THICKNESS The vertical distance between the lowest surface of a cloud (base height or altitude) and the highest surface of that cloud (top height or altitude). REAL LENGTH   158
CLOUD_TOP_AIR_TEMPERATURE The air temperature at the cloud top. REAL THERMO_TEMPERATURE   159
CLOUD_TOP_ALTITUDE The altitude of the highest surface of a cloud, relative to a specified vertical datum. REAL LENGTH   160
CLOUD_TYPE The type of clouds that comprise a sky cover. ENUMERATION     161
CLOUD_WATER_MIXING_RATIO In a cloud, the ratio of the mass of cloud liquid water to the mass of dry air. REAL MASS_FRACTION   162
COLLECTION_TYPE The type of collection criteria. ENUMERATION     163
COLOUR_INFORMATION The textual description of unique aspects of buoy or beacon colouring. STRING     164
COLOUR_INTENSITY Identifies the intensity of colour. ENUMERATION     165
COMBUSTION_INDUCED_FLAME The fraction of maximum production rate of visible flame induced by combustion. The following interpretations may be applied: 1/4: Small, 2/4: Medium, 3/4: Large, 4/4: Maximum. REAL PURE_NUMBER   166
COMMUNICATION_CHANNEL The channel representing the frequency assigned by the controlling authority. STRING     167
COMMUNICATION_TYPE The type of a communications structure such as a radio, television, radar, or repeater station. ENUMERATION     168
COMPLEX_COMP_IDENTIFIER The numeric identifier of a complex and/or component object; used for relating objects to each other. INDEX     169
CONCEALMENT The fraction of complete concealment of an object. REAL PURE_NUMBER   170
CONSPICUOUSNESS The type of conspicuousness of an object. A conspicuous object is easily identifiable and plainly visible under varying conditions of light from harbours, approach channels, or offshore because of its size, shape, or height. ENUMERATION     171
CONSTRICTION_TYPE The type of a constriction or expansion. ENUMERATION     172
CONSTRUCTION_COMPLETION The degree to which the man-made object under construction has been completed. REAL PURE_NUMBER   173
CONTOUR_INTERVAL_RELATION Identifies whether the predominant height or depth is greater than (or equal to), or less than the contour interval. ENUMERATION     174
CONTOUR_TYPE The type of a contour. ENUMERATION     175
CONTRAIL_LAYER_BASE_ALT The altitude, relative to MSL, of the bottom of a layer in the atmosphere where contrail formation is probable. REAL LENGTH   176
CONTRAIL_LAYER_TOP_ALT The altitude, relative to MSL, of the top of a layer in the atmosphere where contrail formation is probable. REAL LENGTH   177
CONTRAIL_PERSISTENCE The persistence status of contrails (a visible trail of streaks of condensed water vapour or ice crystals sometimes forming in the wake of an aircraft). ENUMERATION     178
CONTROL_POINT_TYPE The type of a control point. ENUMERATION     179
CONVECTION_COEFFICIENT The ratio of convective heat flux density through a surface boundary to the temperature gradient across that boundary. REAL COEFFICIENT_HEAT_TRANSFER   180
CONVECTIVE_CLOUD_CVRG The fraction of the celestial dome that is covered by convective clouds, as observed by a ground observer. REAL PURE_NUMBER   181
COVERAGE The type of mixture of environmental objects that have been grouped. ENUMERATION   EA SOURCE 182
COVERED_DRAIN Indicates that an artificial or improved natural drainage way is completely covered over, and connects open drainage ways at each end. LOGICAL     183
COVERED_DRAIN_LENGTH The length of the covered portion of a drainage way. REAL LENGTH   184
CRANE_MOBILITY_TYPE The type of mobility of a crane. ENUMERATION   EA CRANE_TYPE 185
CRANE_TYPE The type of a crane. ENUMERATION     186
CRITICAL_LAYER_ALTITUDE_E The altitude of the E ionospheric layer of free electrons. REAL LENGTH   187
CRITICAL_LAYER_ALTITUDE_F1 The altitude of the F1 ionospheric layer of free electrons. REAL LENGTH   188
CRITICAL_LAYER_ALTITUDE_F2 The altitude of the F2 ionospheric layer of free electrons. REAL LENGTH   189
CRITICAL_LAYER_FREQUENCY_E The minimum radio frequency that begins to be reflected by the E ionospheric layer of free electrons. REAL FREQUENCY   190
CRITICAL_LAYER_FREQUENCY_F1 The minimum radio frequency that begins to be reflected by the F1 ionospheric layer of free electrons. REAL FREQUENCY   191
CRITICAL_LAYER_FREQUENCY_F2 The minimum radio frequency that begins to be reflected by the F2 ionospheric layer of free electrons. REAL FREQUENCY   192
CROSSING_CONTROL The method of traffic control at a road crossing. ENUMERATION     193
CROSSING_TYPE The type of shape attributed to the crossing of two or more lines of communication. ENUMERATION     194
CULTURAL_OBJECT_DENSITY The coverage of buildings and other cultural objects measured by fraction within the delineated object's extent. REAL PURE_NUMBER   195
CULVERT_TYPE The type of a culvert, of which the two main ones are regular culverts and box culverts, either of which can be back-filled. ENUMERATION     196
CUMULATIVE_TRACK_LENGTH The total cumulative length of track contained within the confines of an object, exclusive of the branch or main trunk lines running into and/or out of the object. REAL LENGTH   197
CURRENT_APPEARANCE_MONTH The month of appearance of a current (horizontal movement of a body of water). ENUMERATION     198
CURRENT_DIR_10HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) ten hours after high water. REAL PLANE_ANGLE   199
CURRENT_DIR_11HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) eleven hours after high water. REAL PLANE_ANGLE   200
CURRENT_DIR_1HR The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) one hour after high water. REAL PLANE_ANGLE   201
CURRENT_DIR_1HR_ATREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) one hour after tide reference level. REAL PLANE_ANGLE   202
CURRENT_DIR_1HR_BTREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) one hour before the tide reference level. REAL PLANE_ANGLE   203
CURRENT_DIR_2HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) two hours after high water. REAL PLANE_ANGLE   204
CURRENT_DIR_2HRS_ATREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) two hours after tide reference level. REAL PLANE_ANGLE   205
CURRENT_DIR_2HRS_BTREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) two hours before the tide reference level. REAL PLANE_ANGLE   206
CURRENT_DIR_3HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) three hours after high water. REAL PLANE_ANGLE   207
CURRENT_DIR_3HRS_ATREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) three hours after tide reference level. REAL PLANE_ANGLE   208
CURRENT_DIR_3HRS_BTREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) three hours before the tide reference level. REAL PLANE_ANGLE   209
CURRENT_DIR_4HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) four hours after high water. REAL PLANE_ANGLE   210
CURRENT_DIR_4HRS_ATREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) four hours after tide reference level. REAL PLANE_ANGLE   211
CURRENT_DIR_4HRS_BTREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) four hours before the tide reference level. REAL PLANE_ANGLE   212
CURRENT_DIR_5HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) five hours after high water. REAL PLANE_ANGLE   213
CURRENT_DIR_5HRS_ATREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) five hours after tide reference level. REAL PLANE_ANGLE   214
CURRENT_DIR_5HRS_BTREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) five hours before the tide reference level. REAL PLANE_ANGLE   215
CURRENT_DIR_6HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) six hours after high water. REAL PLANE_ANGLE   216
CURRENT_DIR_6HRS_ATREFLVL The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) six hours after tide reference level. REAL PLANE_ANGLE   217
CURRENT_DIR_7HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) seven hours after high water. REAL PLANE_ANGLE   218
CURRENT_DIR_8HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) eight hours after high water. REAL PLANE_ANGLE   219
CURRENT_DIR_9HRS The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of water flow (current) nine hours after high water. REAL PLANE_ANGLE   220
CURRENT_DISAPPEARANCE_MONTH The month of disappearance of a current (horizontal movement of a body of water), if different from the month of appearance of the current. ENUMERATION   EA CURRENT_APPEARANCE_MONTH 221
CURRENT_RATE_10HRS The rate of water flow (current) ten hours after high water. REAL VELOCITY   222
CURRENT_RATE_11HRS The rate of water flow (current) eleven hours after high water. REAL VELOCITY   223
CURRENT_RATE_1HR The rate of water flow (current) one hour after high water. REAL VELOCITY   224
CURRENT_RATE_1HR_ATREFLVL The rate of water flow (current) one hour after tide reference level. REAL VELOCITY   225
CURRENT_RATE_1HR_BTREFLVL The rate of water flow (current) one hour before the tide reference level. REAL VELOCITY   226
CURRENT_RATE_2HRS The rate of water flow (current) two hours after high water. REAL VELOCITY   227
CURRENT_RATE_2HRS_ATREFLVL The rate of water flow (current) two hours after tide reference level. REAL VELOCITY   228
CURRENT_RATE_2HRS_BTREFLVL The rate of water flow (current) two hours before the tide reference level. REAL VELOCITY   229
CURRENT_RATE_3HRS The rate of water flow (current) three hours after high water. REAL VELOCITY   230
CURRENT_RATE_3HRS_ATREFLVL The rate of water flow (current) three hours after tide reference level. REAL VELOCITY   231
CURRENT_RATE_3HRS_BTREFLVL The rate of water flow (current) three hours before the tide reference level. REAL VELOCITY   232
CURRENT_RATE_4HRS The rate of water flow (current) four hours after high water. REAL VELOCITY   233
CURRENT_RATE_4HRS_ATREFLVL The rate of water flow (current) four hours after tide reference level. REAL VELOCITY   234
CURRENT_RATE_4HRS_BTREFLVL The rate of water flow (current) four hours before the tide reference level. REAL VELOCITY   235
CURRENT_RATE_5HRS The rate of water flow (current) five hours after high water. REAL VELOCITY   236
CURRENT_RATE_5HRS_ATREFLVL The rate of water flow (current) five hours after tide reference level. REAL VELOCITY   237
CURRENT_RATE_5HRS_BTREFLVL The rate of water flow (current) five hours before the tide reference level. REAL VELOCITY   238
CURRENT_RATE_6HRS The rate of water flow (current) six hours after high water. REAL VELOCITY   239
CURRENT_RATE_6HRS_ATREFLVL The rate of water flow (current) six hours after tide reference level. REAL VELOCITY   240
CURRENT_RATE_7HRS The rate of water flow (current) seven hours after high water. REAL VELOCITY   241
CURRENT_RATE_8HRS The rate of water flow (current) eight hours after high water. REAL VELOCITY   242
CURRENT_RATE_9HRS The rate of water flow (current) nine hours after high water. REAL VELOCITY   243
CYCLE_DATE The calendar period in which the airport or runway data was added to airport maintenance records or last revised. The first four digits indicate the year, the last two digits indicate the 28 day cycle in which the addition or change was made. STRING     244

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