Table 6.20 — EAs with labels beginning with P
Label Concept definition Figure(s) Attribute value type EQ label Code
PARALLEL_LINE_COUNT The total number of nominally parallel <LINE>s within an <OBJECT>; parallel line count.   COUNT   941
PARAPET_TYPE The type of a <PARAPET>.   ENUMERATION   942
PARTICLE_ENERGY The energy of a charged <PARTICLE>.   REAL ENERGY 943
PARTITIONED_WATERBODY An indication that a <WATERBODY> is partitioned.   BOOLEAN   944
PASQUILL_ATMOSPHERE-
_STABILITY_INDEX
A method of categorizing the stability of an <ATMOSPHERE_REGION> of the <EARTH> in terms of the horizontal surface <<WIND_SPEED>>, the amount of solar radiation (insolation), and the <<TOTAL_CLOUD_COVERAGE>>; Pasquill atmosphere stability index.   ENUMERATION   945
PASSAGE_BLOCKED An indication that a passageway is blocked to the movement of <VEHICLE>s and/or <HUMAN>s.   BOOLEAN   946
PASSIVE_ACOUSTIC An indication that an <OBJECT> generates acoustic energy not intended for the purposes of detection, localization, and/or identification; passive acoustic.   BOOLEAN   947
PATH_COUNT The number of independent, parallel paths (for example: a <RAILWAY_TRACK> and/or a <ROUTE_LANE_LAND>) in both <DIRECTION>s within a <LAND_TRANSPORTATION_ROUTE>; path count.   COUNT   948
PATROL_CRAFT_TYPE The type of a <PATROL_CRAFT>.   ENUMERATION   949
PEDESTRIAN_CAPACITY The number of pedestrians an <OBJECT> can accommodate; pedestrian capacity.   COUNT   953
PEDESTRIAN_RATE The number of pedestrians per <<TIME_QUANTITY>> formatted in a Basic Latin string using structured text; pedestrian rate. The string contains a number, followed by a unit enclosed in parenthesis ("( )"), followed by a unit qualifier enclosed in square brackets ("[ ]").
EXAMPLE     "100(persons)[per hour]".
  CONSTRAINED_STRING   954
PEDESTRIAN_TRAVERSABILITY The traversability of an <OBJECT> by a pedestrian.   ENUMERATION   955
PERIODIC_CYCLE_TIME The <<TIME_QUANTITY>> within a cyclic repeating phenomenon, typically the intervals of light and eclipse of a <LIGHTHOUSE>; periodic cycle time.   REAL TIME 956
PERIODIC_END_DATE The end of the active period for a seasonal <OBJECT> (for example: a <BUOY>); periodic end date. The value is formatted as specified by <<DATE_FORMAT>> or by <<DATE_TIME_FORMAT>>.   CONSTRAINED_STRING   957
PERIODIC_RESTRICTION_END The <<MONTH>> in which restrictions end on the use of an <OBJECT> due to climate or other limitations; periodic restriction end.   ENUMERATION   958
PERIODIC_RESTRICTION_START The <<MONTH>> in which restrictions begin on the use of an <OBJECT> due to climate or other limitations; periodic restriction start.   ENUMERATION   959
PERIODIC_RESTRICTION_TYPE The type of restriction on the use of an <OBJECT> due to climate or other limitations; periodic restriction type.   ENUMERATION   960
PERIODIC_START_DATE The start of the active period for a seasonal <OBJECT> (for example: a <BUOY>); periodic start date. The value is formatted as specified by <<DATE_FORMAT>> or by <<DATE_TIME_FORMAT>>.   CONSTRAINED_STRING   961
PERMANENT An indication that an <OBJECT> is permanent (as opposed to temporary).   BOOLEAN   962
PH The logarithm of the reciprocal of hydrogen ion concentration in gram atoms per litre; pH.   REAL PURE_NUMBER 963
PHYSICAL_OBSTRUCTION An indication that a physical obstruction, stopping or blocking a <ROUTE>, is present.   BOOLEAN   964
PHYSICAL_STATE The physical state of an <OBJECT>.   ENUMERATION   965
PICTORIAL_RESOURCE_REQUEST Specifies the resource site where a request for a pictorial representation of an <OBJECT> is available; pictorial resource request. The value is formatted in a Basic Latin string as specified by [URI].   CONSTRAINED_STRING   966
PIPE_CONSTRUCTION_MATERIAL-
_TYPE
The type of <MATERIAL> used to construct a <PIPE>; pipe construction material type.   ENUMERATION   1701
PIPELINE_TYPE The type of a <PIPELINE>.   ENUMERATION   967
PITCH_ANGLE Given a right-handed orthonormal 3D coordinate system bound to an <OBJECT>, where the first axis of the coordinate system is directed through the front of the <OBJECT> and the second axis is directed through the right side of the <OBJECT>, the pitch angle is the rotation about the second axis, with the positive rotation angle specified using the right-hand rule. Figure 6.20.968 REAL PLANE_ANGLE 968
PLANETARY_SRF_DEW_POINT-
_DEPRESSION
The <<DEW_POINT_DEPRESSION>> 1,25 to 2,0 metres above a <PLANETARY_SURFACE> at a <LOCATION>.   REAL THERMO_TEMPERATURE 969
PLANETARY_SRF_DEW_POINT-
_TEMPERATURE
The <<DEW_POINT_TEMPERATURE>> 1,25 to 2,0 metres above a <PLANETARY_SURFACE> at a <LOCATION>.   REAL THERMO_TEMPERATURE 970
PLANETARY_SURFACE_AIR-
_TEMPERATURE
The <<AIR_TEMPERATURE>> 1,25 to 2,0 metres above a <PLANETARY_SURFACE> at a <LOCATION>.   REAL THERMO_TEMPERATURE 971
PLANETARY_SURFACE_ATM_PRESSURE The <<ATM_PRESSURE>> at a <PLANETARY_SURFACE>.   REAL PRESSURE 972
PLANETARY_SURFACE-
_ILLUMINANCE_LEVEL
The total solar and lunar contribution to the level of <<ILLUMINANCE>> at a <PLANETARY_SURFACE> as a function of <LOCATION>, date, time, and meteorological conditions.   REAL RADIANT_ENERGY_FLUENCE 973
PLANETARY_SURFACE_TEMPERATURE The <<TEMPERATURE>> of a <PLANETARY_SURFACE> at a <LOCATION>.   REAL THERMO_TEMPERATURE 974
PLANT_COMPONENT_TYPE The type of a <COMPONENT> of a <PLANT>.   ENUMERATION   975
PLATFORM_COUNT The number of platforms at a <TRANSPORTATION_STATION>; platform count.   COUNT   976
PLATOON_ACCOMMODATION-
_AVAILABILITY_COUNT
The number of platoons with associated <EQUIPMENT> that can added to a <DEFENSIVE_POSITION> at the current time; platoon accommodation availability count. This is equal to the <<PLATOON_ACCOMMODATION_CAPACITY>> of the <DEFENSIVE_POSITION> minus the number of platoons that are currently in the <DEFENSIVE_POSITION>.   COUNT   1686
PLATOON_ACCOMMODATION_CAPACITY The number of platoons and associated <EQUIPMENT> that an <OBJECT> can accommodate; platoon accommodation capacity.   REAL PURE_NUMBER 977
PLUNGING_BREAKER_FRACTION A number between 0 and 1 inclusive representing the linearly-scaled fraction of breaking <WATER_WAVE>s within a delineated <WATERBODY_SURFACE_REGION> that are plunging. Plunging means that the <WATER_WAVE> peaks up until it is an advancing vertical wall of <WATER>, the crest then curls far over and descends violently into the preceding trough where the <SURFACE> of the <WATER> is essentially horizontal; a considerable amount of <AIR> is trapped in this process and this <AIR> escapes explosively behind the <WATER_WAVE>, throwing <WATER> high above the <SURFACE> and producing a loud explosive sound. Zero means no breaking <WATER_WAVE>s are plunging and one means all are plunging.   REAL PURE_NUMBER 978
POINT_OBJECT_TYPE The general type of a point <OBJECT>.   ENUMERATION   979
POISSON_RATIO The ratio of change in length in the direction of applied stress to change in width that is perpendicular to the direction of applied stress of a <MATERIAL> when placed under tension; Poisson ratio.   REAL PURE_NUMBER 980
POND_TYPE The type of a pond.   ENUMERATION   982
POPULATED_PLACE_TYPE The type of a populated place.   ENUMERATION   983
POPULATION The number of <HUMAN>s within a delineated <REGION>; population.   COUNT   984
POSTURE The posture of a <HUMAN>.   ENUMERATION   985
POTENTIAL_AIR_TEMPERATURE The <<AIR_TEMPERATURE>> that a parcel of dry <AIR> would have, if brought adiabatically from its initial state to the standard pressure of 100 kilopascals (1 000 millibars); potential air temperature.   REAL THERMO_TEMPERATURE 986
POTENTIAL_TEMP_INVRSN_LAYER-
_LAPSE_RATE
The <<POTENTIAL_TEMPERATURE_LAPSE_RATE>> in a <POTENTIAL_TEMPERATURE_INVERSION_LAYER>.   REAL LINEIC_THERMO_TEMP_GRADIENT 1672
POTENTIAL_TEMPERATURE_BASE-
_INVERSION_LAYER
The vertical distance to the base of a <POTENTIAL_TEMPERATURE_INVERSION_LAYER> from a reference <SURFACE> identified by an <<ATM_VERTICAL_REFERENCE>>.   REAL LENGTH 1670
POTENTIAL_TEMPERATURE_LAPSE-
_RATE
The rate of change of the <<POTENTIAL_AIR_TEMPERATURE>> as a function of <<HEIGHT_AGL>>; potential temperature lapse rate.   REAL LINEIC_THERMO_TEMP_GRADIENT 1673
POTENTIAL_TEMPERATURE_TOP-
_INVERSION_LAYER
The vertical distance to the top of a <POTENTIAL_TEMPERATURE_INVERSION_LAYER> from a reference <SURFACE> identified by an <<ATM_VERTICAL_REFERENCE>>.   REAL LENGTH 1671
POWER_GENERATING_CAPACITY The electrical power generating capacity of an <OBJECT>; power generating capacity.   REAL POWER 987
POWER_GENERATION_RATE A number between 0 and 1 inclusive representing the linearly-scaled fractional power generation of a <MAN_MADE_OBJECT> with the associated noise and heat; power generation rate. Zero means none at all and one means maximum.   REAL PURE_NUMBER 988
POWER_PLANT_TYPE The technology used by a <POWER_PLANT> to produce electricity; power plant type.   ENUMERATION   989
PRACTICAL_SALINITY A measure of the <<MASS>> of dissolved <MATERIAL> in seawater as determined by the <<OCEAN_ELECTRICAL_CONDUCTIVITY_RATIO>> at a <<TEMPERATURE>> of 288,15 kelvin (15 degrees Celsius) and the pressure of one standard atmosphere; practical salinity.   REAL MASS_FRACTION 990
PRANDTL_NUMBER The non-dimensional ratio of the kinematic viscosity to the thermal diffusivity, usually about 1 for the atmosphere and about 7 for water; Prandtl number.   REAL PURE_NUMBER 1674
PRECIPITABLE_WATER The total water vapour contained in a vertical column of unit cross-sectional <<AREA>> extending between two <<HEIGHT_AGL>>s of an <ATMOSPHERE>; precipitable water.   REAL SURFACE_DENSITY 991
PRECIPITABLE_WATER_TOTAL The total <<PRECIPITABLE_WATER>> contained in a column of unit cross section extending from the <PLANETARY_SURFACE> to the top of the <ATMOSPHERE>.   REAL SURFACE_DENSITY 992
PRECIPITATION_INTENSITY The intensity of <PRECIPITATION>.   ENUMERATION   993
PRECIPITATION_NOISE_POWER-
_LEVEL
The power level of acoustic noise energy in a <WATERBODY> due to <PRECIPITATION> onto the <WATERBODY_SURFACE>.   REAL PRESSURE_POWER_LEVEL 994
PRECIPITATION_PERIOD The <<TIME_QUANTITY>> prior to the referenced time over which <PRECIPITATION> accumulated; precipitation period.   REAL TIME 995
PRECIPITATION_PHASE The state (liquid/solid disposition) of precipitable <WATER>; precipitation phase.   ENUMERATION   996
PRECIPITATION_RATE The rate of <PRECIPITATION>.   REAL SPEED 997
PRECIPITATION_TYPE The type of <PRECIPITATION>.   ENUMERATION   998
PREDOMINANT_DEPTH_WITHIN-
_OBJECT
The predominant (greater than 50 percent) <<DEPTH>> within the <REGION> delineated by an <OBJECT>.   REAL LENGTH 999
PREDOMINANT_HEIGHT The predominant (greater than 50 percent) <<HEIGHT_AGL>> of an <OBJECT>. If not obtainable, then the mean <<HEIGHT_AGL>> of the <OBJECT>.   REAL LENGTH 1000
PREDOMINANT_HEIGHT_WITHIN-
_OBJECT
The predominant (greater than 50 percent) height within the <REGION> delineated by an <OBJECT>.   REAL LENGTH 1001
PREDOMINANT_SURROUND_TYPE The predominant type of other <OBJECT>s within a <<RADIUS>> of 457 metres (1 500 feet) of an <OBJECT> of interest; predominant surround type.   ENUMERATION   1002
PREDOMINANT_VEGETATION_HEIGHT The predominant (greater than 50 percent) <<HEIGHT_AGL>> of <VEGETATION>.   REAL LENGTH 1003
PREDOMINANT_WATER_DEPTH The predominant (greater than 50 percent) <<WATER_DEPTH>> determined at the greatest depth along a cross section of the <OBJECT>.   REAL LENGTH 1004
PREPARED_EXPLOSIVE-
_DESTRUCTION_COMPLETION-
_FRACTION
A number between 0 and 1 inclusive representing the linearly-scaled fraction of the extent to which an <OBJECT> has been prepared for destruction by <EXPLOSIVE_CHARGE>s; prepared explosive destruction completion fraction. Zero means no preparation at all and one means completely prepared.   REAL PURE_NUMBER 1005
PRESENT_WEATHER_TYPE_AUTOMATED The type of weather existing at an automated <WEATHER_STATION> at the time of observation; present weather type automated.   ENUMERATION   1006
PRESENT_WEATHER_TYPE_MANUAL The type of weather existing at a manual <WEATHER_STATION> at the time of observation; present weather type manual.   ENUMERATION   1007
PRESENT_WEATHER_TYPE_SPECIAL The type of a special weather event or observation; present weather type special.   ENUMERATION   1008
PRESSURE_ALTIMETER_QUALITY The quality of a <<PRESSURE_ALTIMETER_SETTING>>.   ENUMERATION   1009
PRESSURE_ALTIMETER_SETTING The value of the <<ATM_PRESSURE>> used to adjust the subscale of a pressure altimeter so that it indicates the vertical distance of an <AIRCRAFT> above a known <<ATM_VERTICAL_REFERENCE>>; pressure altimeter setting.   REAL PRESSURE 1010
PRESSURE_ALTITUDE The altitude that corresponds to a given <FLIGHT_LEVEL>; pressure altitude.   REAL LENGTH 1011
PRI_WEAPON_DEPLOYED_POS-
_CATEGORY
A category describing the <<PRI_WEAPON_DEPLOYED_POSITION>>.   ENUMERATION   1012
PRI_WEAPON_DEPLOYED_POSITION A number between 0 and 1 inclusive representing the linearly-scaled fractional deployment of the primary <WEAPON_SYSTEM> of a <MAN_MADE_OBJECT>; primary weapon deployed position. Zero means fully stowed/retracted and one means fully deployed.   REAL PURE_NUMBER 1013
PRIMARY An indication that an <OBJECT> is primary.   BOOLEAN   1014
PRIMARY_AERIAL_DEPLOYED-
_POSITION
A number between 0 and 1 inclusive representing the linearly-scaled fractional deployment of the primary <AERIAL> on a <MAN_MADE_OBJECT>; primary aerial deployed position. Zero means fully stowed/retracted and one means fully deployed.   REAL PURE_NUMBER 1015
PRIMARY_AXIS_VELOCITY-
_COMPONENT
The <<VELOCITY>> component of an <OBJECT> along the primary axis of a defined spatial reference frame.   REAL SPEED 1016
PRIMARY_BREAKER_AZIMUTH The <<VECTOR_AZIMUTH_GEODETIC>> of a <LINE> drawn perpendicular to the <DIRECTION> of propagation of primary breaking <WATER_WAVE>s in the wave spectra of a <SURF_ZONE>; primary breaker azimuth.   REAL PLANE_ANGLE 1017
PRIMARY_BREAKER_RELATIVE_ANGLE The horizontal angle the primary breaking <WATER_WAVE>s make with respect to the <BEACH>; primary breaker relative angle. The angle varies from zero when the <LINE> of the <WATER_WAVE>s parallels the <BEACH> to 90 arc degrees on either the right or left flank as seen from <VESSEL>s approaching the <BEACH>.   REAL PLANE_ANGLE 1018
PRIMARY_BROADCAST_FREQUENCY The designated primary broadcast <<FREQUENCY>> for a communications <DEVICE>.   REAL FREQUENCY 1019
PRIMARY_BYPRODUCT The primary by-product of a production, mining, or agricultural activity.   ENUMERATION   1020
PRIMARY_DOOR_OPEN_POSITION A number between 0 and 1 inclusive representing the linearly-scaled fractional opening of the primary <DOOR> of a <MAN_MADE_OBJECT>; primary door open position. Zero means fully closed and one means fully open.   REAL PURE_NUMBER 1021
PRIMARY_ENTRANCE_LOCATION The <LOCATION> of the primary (general) <STRUCTURE_ENTRANCE> as observed from outside the <STRUCTURE> looking towards its front.   ENUMERATION   1022
PRIMARY_MATERIAL_TYPE The type of primary <MATERIAL> of which an <OBJECT> is composed.   ENUMERATION   1023
PRIMARY_OPERATING_AGENCY-
_IDENTIFIER
The DAFIF two character code identifying the primary operating agency of an <AERODROME>. The value is formatted in a Basic Latin string as specified by [DAFIF, Sec. 201.A.17].   CONSTRAINED_STRING   1024
PRIMARY_PRODUCT The primary product resulting from a production, mining, or agricultural activity.   ENUMERATION   1025
PRIMARY_RAW_MATERIAL The primary raw <MATERIAL> involved in a production activity.   ENUMERATION   1026
PRIMARY_SURFACE_AIR_VELOCITY The <<VELOCITY>> of the <AIR> along the primary <SURFACE>, generally the top, front, or outer side of a layer of <MATERIAL> or an <OBJECT>.   REAL SPEED 1027
PRIMARY_SURFACE_TEMPERATURE The <<TEMPERATURE>> of the medium in contact with the primary <SURFACE> of an <OBJECT>, generally the top, front, or outer side of a layer of <MATERIAL>, that is typically used as a boundary condition in thermal solutions.   REAL THERMO_TEMPERATURE 1028
PRIMARY_SURFACE_THERMAL-
_CONDITION
The physical boundary condition at the primary <SURFACE> of an <OBJECT>, generally the top, front, or outer side of a layer of <MATERIAL>, that accounts for the thermal interface of the <OBJECT> with the environment at that <SURFACE>; primary surface thermal condition.   ENUMERATION   1029
PRIMARY_SWELL_WAVE_DIRECTION The <<GEODETIC_AZIMUTH>> of the <DIRECTION> from which primary <SWELL_WAVE>s are arriving.   REAL PLANE_ANGLE 1030
PRIMARY_SWELL_WAVE_HEIGHT The mean height of the significant (highest one-third) primary <SWELL_WAVE>s.   REAL LENGTH 1031
PRIMARY_SWELL_WAVE_PERIOD The mean <<TIME_QUANTITY>> that a complete cycle (usually crest to crest or trough to trough) of a primary <SWELL_WAVE> takes to pass a given fixed point; primary swell wave period.   REAL TIME 1032
PRIMARY_WAVE_DIRECTION The <<GEODETIC_AZIMUTH>> of the <DIRECTION> from which significant <WATER_WAVE>s in the wave spectra are arriving; primary wave direction.   REAL PLANE_ANGLE 1033
PRIORITY A value representing the priority of a given <OBJECT> as compared to other <OBJECT>s which overlap in spatial extent. A higher value means a higher priority.   INTEGER   1034
PROCESSING_NAME A name that is assigned to an <OBJECT> to support processing internal to an information <SYSTEM>.   STRING   1035
PROPERTY_SET_DATA_SOURCE The source of data values of a <PROPERTY_SET>.   ENUMERATION   1036
PROPERTY_SET_SPATIAL_DOMAIN The spatial domain of a <PROPERTY_SET>.   ENUMERATION   1037
PROPERTY_SET_VALID_TIME The <<TIME_QUANTITY>> relative to a specified zero hour at which a <PROPERTY_SET> is valid.   REAL TIME 1038
PROTECTION_SHED_TYPE The type of a <PROTECTION_SHED>.   ENUMERATION   1039
PUBLIC_ACCOMMODATION_TYPE The type of a <FACILITY> that is used for accommodating the public but not as a permanent or long-term <DWELLING>; public accommodation type.   ENUMERATION   1040
PUBLICATION_REFERENCE A reference to a specific paragraph in a publication.   STRING   1041