{
    "$schema": "http://json-schema.org/schema#",
    "$schemaVersion": "0.0.1",
    "modelTags": "B-WaterSmart",
    "$id": "https://smart-data-models.github.io/dataModel.WasteWater/SludgeQualityObserved/schema.json",
    "title": "Sludge quality observed schema",
    "description": "Sludge Quality data model is intended to represent sludge quality parameters.",
    "type": "object",
    "allOf": [
        {
            "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/GSMA-Commons"
        },
        {
            "$ref": "https://smart-data-models.github.io/data-models/common-schema.json#/definitions/Location-Commons"
        },
        {
            "properties": {
                "type": {
                    "type": "string",
                    "enum": [
                        "SludgeQualityObserved"
                    ],
                    "description": "Property. NGSI Entity type. It has to be SludgeQualityObserved"
                },
                "dateObserved": {
                    "type": "string",
                    "description": "Property. Model:'https://schema.org/DateTime'. The date and time of this observation in ISO8601 UTCformat. It can be represented by an specific time instant or by an ISO8601 interval"
                },
                "measurand": {
                    "type": "array",
                    "description": "Property. An array of strings containing details (see format below) about extra measurands provided by this observation",
                    "items": {
                        "type": "string",
                        "description": "Property. Every measurand provided by this observation."
                    },
                    "minItems": 1
                },
                "pH": {
                    "type": "number",
                    "minimum": 0,
                    "maximum": 14,
                    "description": "Property. Acidity or basicity of an aqueous solution"
                },
                "refPointOfInterest": {
                    "anyOf": [
                        {
                            "type": "string",
                            "minLength": 1,
                            "maxLength": 256,
                            "pattern": "^[\\w\\-\\.\\{\\}\\$\\+\\*\\[\\]`|~^@!,:\\\\]+$",
                            "description": "Property. Identifier format of any NGSI entity"
                        },
                        {
                            "type": "string",
                            "format": "uri",
                            "description": "Property. Identifier format of any NGSI entity"
                        }
                    ],
                    "description": "Relationship. A reference to a point of interest associated to this observation"
                },
                "N-TOT": {
                    "type": "number",
                    "minimum": 0,
                    "maximum": 1,
                    "description": "Property. Total Nitrogen. Total Nitrogen (TN) is the sum of nitrate-nitrogen (NO3-N), nitrite-nitrogen (NO2-N), ammonia-nitrogen (NH3-N) and organically bonded nitrogen. Units:'percentage of SS (min)'"
                },
                "P-TOT": {
                    "type": "number",
                    "minimum": 0,
                    "maximum": 1,
                    "description": "Property. Total Phosphorus. Total phosphorus is a measure of all forms of phosphorus in the water, including dissolved and particulate, organic and inorganic. Units:'percentage of SS (min)'"
                },
                "K-TOT": {
                    "type": "number",
                    "minimum": 0,
                    "maximum": 1,
                    "description": "Property. Total potassium. Total content of potassium. Units:'percentage of SS (min)'"
                },
                "C-ORG": {
                    "type": "number",
                    "minimum": 0,
                    "maximum": 1,
                    "description": "Property. Organic Carbon. Concentration of organic carbon. Units:'percentage of SS (min)'"
                },
                "PCB": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Polychlorinated biphenyls Concentration of polychlorinated biphenyls. Units:'mg/Kg SS'"
                },
                "As": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Arsenic. Concentration of arsenic. Units:'mg/Kg SS'"
                },
                "B": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Boron. Concentration of boron. Units:'mg/Kg SS'"
                },
                "Be": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Beryllium. Concentration of Beryllium. Units:'mg/Kg SS'"
                },
                "Cd": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Cadmium. Concentration of cadmium. Units:'mg/Kg SS'"
                },
                "Cr": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Chromium. Concentration of chromium. Units:'mg/Kg SS'"
                },
                "Cr-VI": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Chromium VI. Concentration of chromium at the oxidation state +6. Units:'mg/Kg SS'"
                },
                "Cu": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Copper. Concentration of copper. Units:'mg/Kg SS'"
                },
                "Hg": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Mercury. Concentration of mercury. Units:'mg/Kg SS'"
                },
                "Ni": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Nickel. Concentration of Nickel. Units:'mg/Kg SS'"
                },
                "Se": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Selenium. Concentration of selenium. Units:'mg/Kg SS'"
                },
                "Zn": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Zinc. Concentration of zinc. Units:'mg/Kg SS'"
                },
                "IPA": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Sum of isopropyl alcohol Sum of content of isopropyl alcohol. Units:'mg/Kg SS'"
                },
                "toluene": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Concentration of Toluene. Units:'mg/Kg SS'"
                },
                "AOX": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Concentration of Adsorbable Organically bound halogens (AOX). Units:'mg/Kg SS'"
                },
                "DEHP": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Diethylhexyl phthalate. Concentration of DEHP. Units:'mg/Kg SS'"
                },
                "C10-C40": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Concentration of Hydrocarbons C10-C40. Units:'mg/Kg SS'"
                },
                "salmonella": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Concentration of Salmonella (Most Probable Number per gram solids). Units:'MPN/g SS (max)'"
                },
                "faecal-coliforms": {
                    "type": "number",
                    "minimum": 0,
                    "description": "Property. Concentration of fecal coliforms (Most Probable Number per gram solids). Units:'MPN/g SS (max)'"
                }
            }
        }
    ],
    "required": [
        "id",
        "type",
        "dateObserved",
        "location"
    ]
}