Table 6.19 -- EDCS Attributes whose label begins with P
| Label | Definition | Attribute value type | EQ label | Related concepts | Code |
| PARALLEL_LINE_COUNT | The total numbers of nominally parallel lines within an object. | COUNT | 762 | ||
| PARTICLE_ENERGY | The energy of a charged particle. | REAL | ENERGY | 763 | |
| PARTICLE_ENERGY_RANGE | A range indicating the energy of a charged particle. | ENUMERATION | 764 | ||
| PARTITIONED_POND_TYPE | The kind of pond that the partitions separate. | ENUMERATION | 765 | ||
| PASQUILL_ATM_STABILITY_NDX | The atmospheric stability, based on the standard deviation of horizontal wind direction fluctuations and temperature change with height. | ENUMERATION | 766 | ||
| PASSIVE_ACOUSTIC | Indicates that the object generates acoustic energy not intended for the purposes of detection, localization, and/or identification. | LOGICAL | 767 | ||
| PATH_COUNT | The number of independent, parallel paths within a route (e.g., tracks or lanes), including both directions. | COUNT | 768 | ||
| PEDESTRIAN_CAPACITY | The number of pedestrians an object can accommodate. | INTEGER | PURE_NUMBER | 769 | |
| PEDESTRIAN_RATE | The number of pedestrians per time unit; coded using a structured text approach (e.g., "100(persons)[per hour]" where the type of unit is in parentheses ( ) and a unit qualifier is in brackets [ ]. | STRING | 770 | ||
| PERIODIC_CYCLE_TIME | The time within a cyclic repeating phenomenon, for example intervals of light and eclipse of a lighthouse. | REAL | TIME | 771 | |
| PERIODIC_END_DATE | The end of the active period for a seasonal object (e.g., a buoy); coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | EA PERIODIC_START_DATE | 772 | |
| PERIODIC_RESTRICTION_CODED | The type of restriction due to climate or other limitations. | ENUMERATION | 773 | ||
| PERIODIC_RESTRICTION_END | The end month for restrictions due to climate or other limitations. | ENUMERATION | EA PERIODIC_RESTRICTION_START | 774 | |
| PERIODIC_RESTRICTION_START | The start month for restrictions due to climate or other limitations. | ENUMERATION | EA PERIODIC_RESTRICTION_END | 775 | |
| PERIODIC_START_DATE | The start of the active period for a seasonal object (e.g., a buoy); coded as specified by ISO 8601:1988, 5.2.1.1. | STRING | EA PERIODIC_END_DATE | 776 | |
| PERMANENT | Indicates that the object is permanent (as opposed to temporary). | LOGICAL | EA EXISTENCE_STATUS | 777 | |
| PH | The logarithm of the reciprocal of hydrogen ion concentration in gram atoms per litre. | REAL | PURE_NUMBER | 778 | |
| PHYSICAL_STATE | The physical state of an object. | ENUMERATION | 779 | ||
| PHYSICAL_SURFACE_TYPE | The principal characteristic of a surface. | ENUMERATION | 780 | ||
| PICTORIAL_REPRESENTATION | Specifies whether a pictorial representation of an object is available. | STRING | 781 | ||
| PILE_TYPE | The type of a piling. | ENUMERATION | 782 | ||
| PILOT_BOARDING_METHOD | The type of pilot boarding place. | ENUMERATION | 783 | ||
| PILOT_BOARDING_VEHICLE | The method by which pilots are transferred to and from ships using pilot services. | ENUMERATION | 784 | ||
| PILOT_DISTRICT | The pilot district for which a pilot is responsible. | STRING | 785 | ||
| PIPELINE_TYPE | The function of pipeline. | ENUMERATION | 786 | ||
| PITCH_ANGLE | The angular distance about the pitch axis of an object, from the local horizontal clockwise (upwards) to the forward axis of the object, measured in the local vertical plane. The forward axis of the object is the axis which passes through the object centre and is directed towards/through the forward part or surface (front) of the object. The pitch axis of the object is normal to the forward axis in the horizontal plane of the object and forms a two dimensional right-handed system. | REAL | PLANE_ANGLE | 787 | |
| PLANETARY_SURFACE_TEMP | The temperature of the planetary surface, i.e., the surface of the terrain or bodies of water. | REAL | THERMO_TEMPERATURE | 788 | |
| PLATFORM_COUNT | The number of platforms at a railway station or similar facility. | COUNT | 789 | ||
| PLUNGING_BREAKERS | The rate of occurrence of plunging waves (crest of wave curls over forward and impinges onto part of wave trough, as the result of a steep beach). | REAL | PURE_NUMBER | 790 | |
| POINT_OBJECT_TYPE | The general type of a point object. | ENUMERATION | 791 | ||
| POISSON_RATIO | The ratio of change in length (direction of stress) to change in width (perpendicular to the direction of stress) of a material when placed under tension. | REAL | PURE_NUMBER | 792 | |
| POPULATED_PLACE_TYPE | The type of a populated place. | ENUMERATION | 793 | ||
| POPULATION | The number of people within an object, e.g., a built up region. | INTEGER | PURE_NUMBER | 794 | |
| POPULATION_RANGE | A range indicating the number of people within an object, e.g., a built up region. | ENUMERATION | 795 | ||
| PORT_IDENTIFIER | The textual identifier of a maritime port; used for linking to an external database or reference. | KEY | 796 | ||
| POSITION_QUALITY | The quality of a position. | ENUMERATION | 797 | ||
| POTENTIAL_AIR_TEMPERATURE | The temperature a parcel of dry air would have, if brought adiabatically from its initial state to the standard pressure of 100 kilopascal (1 000 millibars). | REAL | THERMO_TEMPERATURE | 798 | |
| POWER_GENERATING_CAPACITY | The electrical power generating capacity of an object. | REAL | POWER | 799 | |
| POWER_GENERATION_RATE | The fraction of maximal power generation, and associated noise and heat. | REAL | PURE_NUMBER | 800 | |
| POWER_PLANT_TYPE | The energy source used to generate power. | ENUMERATION | 801 | ||
| PRECIPITABLE_WATER | The rate of water vapour mass per unit area (precipitable water). | REAL | SURFACE_DENSITY | 802 | |
| PRECIPITATION_DURATION | The quantity of time prior to the referenced time over which the precipitation accumulated. | REAL | TIME | 803 | |
| PRECIPITATION_INTENSITY | The intensity of precipitation. | ENUMERATION | 804 | ||
| PRECIPITATION_PHASE | The liquid/solid disposition of precipitable water. | ENUMERATION | 805 | ||
| PRECIPITATION_RATE | The average rate of the liquid water equivalent of precipitation that falls over a period. | REAL | VELOCITY | 806 | |
| PRECIPITATION_TYPE | The type of precipitation. | ENUMERATION | 807 | ||
| PREDOMINANT_COLOUR | The predominant colour of an object. If an object has multiple colours, this colour produces the largest single contribution to the object's total colour. | ENUMERATION | 808 | ||
| PREDOMINANT_DEP_WITHIN_OBJ | The predominant depth within delineation of an object. | REAL | LENGTH | 809 | |
| PREDOMINANT_HEIGHT | The height of 51% or more of an object; if not obtainable, then the average height of the object will be used. | REAL | LENGTH | EA PREDOMINANT_HEIGHT_RANGE | 810 |
| PREDOMINANT_HEIGHT_RANGE | A range indicating the height of 51% or more of an object. | ENUMERATION | EA PREDOMINANT_HEIGHT | 811 | |
| PREDOMINANT_HGT_WITHIN_OBJ | The predominant height within delineation of an object. | REAL | LENGTH | 812 | |
| PREDOMINANT_SURROUND_TYPE | The predominant type of other objects that surround an object of interest, within a radius of 457 metres (1 500 feet). | ENUMERATION | 813 | ||
| PREDOMINANT_VEG_HGT_RANGE | The predominant height of vegetation range within delineated region of an object. | ENUMERATION | 814 | ||
| PREDOMINANT_WALL_PATTERN | The predominant visual pattern of the exterior walls of a structure, e.g., stucco, clapboard, or mosaic. | ENUMERATION | 815 | ||
| PREDOMINANT_WALL_SRF_MTRL | The predominant outermost wall covering material. | ENUMERATION | 816 | ||
| PREPARED_EXPD_COMPLETION | The extent to which an object (e.g., a structure or obstacle), has been prepared for destruction by explosives in terms of fractional completion. The following interpretations may be applied: 1/4: Partially Prepared, 2/4: Half Prepared, 3/4: Mostly Prepared, 4/4: Completely Prepared. | REAL | PURE_NUMBER | 817 | |
| PRESSURE_ALTIMETER_QUALITY | The quality status of a pressure altimeter setting. | ENUMERATION | EA PRESSURE_ALTIMETER_SETTING | 818 | |
| PRESSURE_ALTIMETER_SETTING | The pressure value to which an aircraft altimeter is set so that it will indicate the altitude relative to MSL of an aircraft on the ground at the location for which the value was determined. | REAL | PRESSURE | 819 | |
| PRESSURE_ALTITUDE | The altitude, in the standard atmosphere, at which a given pressure will be observed. The indicated altitude of a pressure altimeter at an altimeter setting of 1 013,2 hectopascal (760 millimetres of mercury). | REAL | LENGTH | 820 | |
| PRI_ANTENNA_POSITION | The position of the primary antenna in terms of fractional deployment from a fully stowed/retracted state. | REAL | PURE_NUMBER | 821 | |
| PRI_BROADCAST_FREQUENCY | The primary broadcast frequency of a communications device. | REAL | FREQUENCY | 822 | |
| PRI_DISPLAY_MODE | The normal display status of an object. | ENUMERATION | 823 | ||
| PRI_DOOR_POSITION | The position of the primary door in terms of fractional opening from a fully closed state, where the fully open state represents, e.g., a 180 arc degree rotation from the initial position or fully (slid/retracted) open. | REAL | PURE_NUMBER | 824 | |
| PRI_ENTRANCE_LOCATION | The location of the primary (general) entrance to an object, when observed from outside an object looking towards its front. | ENUMERATION | 825 | ||
| PRI_MATERIAL_TYPE | The type of primary material composition of an object. | ENUMERATION | EA SCND_MATERIAL_TYPE, EA SURFACE_MATERIAL_TYPE, EA UNDERLYING_MATERIAL_TYPE | 826 | |
| PRI_NAVIGATION_SYSTEM_TYPE | The secondary technology (e.g., equipment or system) used in electronic navigation. | ENUMERATION | 827 | ||
| PRI_OPERATING_AGENCY | A two character code reflecting the primary operator of an airport or airfield. | STRING | 828 | ||
| PRI_OPERATING_RANGE | The primary range of the NAVAID beyond which the capture of the signal is not completely assured. | REAL | LENGTH | 829 | |
| PRI_ROUTE_DESIGNATION | The official route designation (e.g., "I-95", "M-2", or "A-1") assigned to an object. | STRING | EA SCND_ROUTE_DESIGNATION | 830 | |
| PRI_SRF_THERMAL_CONDITION | The physical boundary condition at the primary surface, generally the top, front, or outer side of a material layer or object, accounting for an object's interface with the environment at that surface. | ENUMERATION | EA SCND_SRF_THERMAL_CONDITION | 831 | |
| PRI_SURFACE_AIR_VELOCITY | The air velocity at the primary surface, generally the top, front, or outer side of a material layer or object. | REAL | VELOCITY | EA SCND_SURFACE_AIR_VELOCITY | 832 |
| PRI_SURFACE_TEMPERATURE | The temperature of the medium in contact with an object's primary surface, generally the top, front, or outer side of a material layer or object; typically used as a boundary condition in thermal solutions. | REAL | THERMO_TEMPERATURE | EA SCND_SURFACE_TEMPERATURE | 833 |
| PRI_TRAFFIC_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction of traffic, first occurrence. | REAL | PLANE_ANGLE | 834 | |
| PRI_WAVE_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction from which significant waves in the ocean spectra are arriving. | REAL | PLANE_ANGLE | 835 | |
| PRI_WEAPON_POSITION | The position of the primary weapon system in terms of fractional deployment from a fully stowed/retracted state. | REAL | PURE_NUMBER | EA PRI_WEAPON_POSITION_CODED | 836 |
| PRI_WEAPON_POSITION_CODED | The categorical position of the primary weapon system. | ENUMERATION | EA PRI_WEAPON_POSITION | 837 | |
| PRIMARY_PRODUCT | The principal material involved, or product resulting from, activity at a site. | ENUMERATION | 838 | ||
| PROCESSING_NAME | A name for an object assigned to support processing internal to an information system. | STRING | 839 | ||
| PROFILE_MSRMNT_TECHNIQUE | The technique or method of profile measurement; a profile is a data set intended to represent a series of measurements collected along a (roughly) vertical axis. | ENUMERATION | 840 | ||
| PUBLICATION_REFERENCE | A reference to a specific paragraph in a publication. | STRING | 841 |