{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$schemaVersion": "0.0.6",
  "modelTags": "NAIADES, DigitalWater.city, B-WaterSmart, Waterverse",
  "$id": "https://smart-data-models.github.io/dataModel.WaterQuality/WaterQualityObserved/schema.json",
  "title": "Water quality observed schema",
  "description": "Water Quality data model is intended to represent water quality parameters at a certain water mass (river,  lake, sea, etc.) section",
  "type": "object",
  "allOf": [
    {
      "$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": [
            "WaterQualityObserved"
          ],
          "description": "Property. NGSI Entity type. It has to be WaterQualityObserved"
        },
        "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",
          "items": {
            "type": "string",
            "description": "Property. Every element of the array of strings containing details (see format below) about extra measurands provided by this observation"
          },
          "minItems": 1,
          "description": "Property. An array of strings containing details (see format below) about extra measurands provided by this observation"
        },
        "temperature": {
          "type": "number",
          "description": "Property. Temperature"
        },
        "bod": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Biochemical oxygen demand (BOD) is the amount of dissolved oxygen (DO) needed (i.e. demanded) by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period. Units:'mg/l'"
        },
        "cod": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Chemical oxygen demand (COD) is an indicative measure of the amount of oxygen that can be consumed by reactions in a measured solution. Units:'mg/l'"
        },
        "conductivity": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Electrical Conductivity"
        },
        "conductance": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Specific Conductance"
        },
        "tss": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Total suspended solids"
        },
        "tds": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Total dissolved solids. "
        },
        "turbidity": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Amount of light scattered by particles in the water column"
        },
        "salinity": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Amount of salts dissolved in water"
        },
        "pH": {
          "type": "number",
          "minimum": 0,
          "maximum": 14,
          "description": "Property. Acidity or basicity of an aqueous solution"
        },
        "orp": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Oxidation-Reduction potential"
        },
        "O2": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Level of free, non-compound oxygen present"
        },
        "Chla": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of chlorophyll A"
        },
        "PE": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of pigment phycoerythrin which can be measured to estimate cyanobacteria concentrations specifically"
        },
        "PC": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of pigment phycocyanin which can be measured to estimate cyanobacteria concentrations specifically"
        },
        "NH4": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of ammonium"
        },
        "NH3": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of ammonia"
        },
        "Cl-": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of chlorides"
        },
        "NO3": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of nitrates"
        },
        "PO4": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of phosphates"
        },
        "escherichiaColi": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of Escherichia coli. Units:'Total number of bacteria/100mL'"
        },
        "enterococci": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of Enterococci. Units:'Total number of bacteria/100mL'"
        },
        "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"
        },
        "flow": {
          "type": "number",
          "description": "Property. Units:'cubic meters/hour'. Water Flow observed. "
        },
        "alkalinity": {
          "type": "number",
          "minimum": 0,
          "description": "Property. The alkalinity of water is its acid-neutralizing capacity comprised of the total of all titratable bases. Units:'mg/l'"
        },
        "TKN": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Total Kjeldahl Nitrogen. A measure that determines both the organic and the inorganic forms of nitrogen. Units:'mg/l'"
        },
        "NO2": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Nitrite nitrogen. Concentration of a sample in nitrite nitrogen. Units:'mg/l'"
        },
        "N-TOT": {
          "type": "number",
          "minimum": 0,
          "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:'mg/l'"
        },
        "P-TOT": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Total Phosphorus. Total phosphorus is a measure of all forms of\u00a0phosphorus\u00a0in the water, including dissolved and particulate, organic and inorganic. Units:'mg/l'"
        },
        "P-PO4": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Phosphate-phosphorus. Concentration of phosphorus as phosphate. Units:'mg/l'"
        },
        "Al": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Aluminium. Concentration of aluminium. Units:'mg/l'"
        },
        "As": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Arsenic. Concentration of arsenic. Units:'mg/l'"
        },
        "B": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Boron. Concentration of boron. Units:'mg/l'"
        },
        "Ba": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Barium. Concentration of barium. Units:'mg/l'"
        },
        "Cd": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Cadmium. Concentration of cadmium. Units:'mg/l'"
        },
        "Cr": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Chromium. Concentration of chromium. Units:'mg/l'"
        },
        "Cr-III": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Chromium III. Concentration of chromium at the oxidation state +3. Units:'mg/l'"
        },
        "Cr-VI": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Chromium VI. Concentration of chromium at the oxidation state +6. Units:'mg/l'"
        },
        "Cu": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Copper. Concentration of copper. Units:'mg/l'"
        },
        "Fe": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Iron. Concentration of iron. Units:'mg/l'"
        },
        "fluoride": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of fluoride. Units:'mg/l'"
        },
        "Hg": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Mercury. Concentration of mercury. Units:'mg/l'"
        },
        "THC": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Total hydrocarbon. Concentration of total hydrocarbon. Units:'mg/l'"
        },
        "Ni": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Nickel. Concentration of Nickel. Units:'mg/l'"
        },
        "TO": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Total oil content. Concentration of oil. Units:'mg/l'"
        },
        "Pb": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Lead. Concentration of lead. Units:'mg/l'"
        },
        "Se": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Selenium. Concentration of selenium. Units:'mg/l'"
        },
        "Sn": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Tin. Concentration of tin. Units:'mg/l'"
        },
        "sulphate": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of sulfate. Units:'mg/l'"
        },
        "sulphite": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of sulfite. Units:'mg/l'"
        },
        "anionic-surfactants": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of anionic surfactants. Units:'mg/l'"
        },
        "cationic-surfactants": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentrtation of cationic surfactants. Units:'mg/l'"
        },
        "non-ionic-surfactants": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of non-ionic surfactants. Units:'mg/l'"
        },
        "total-surfactants": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Concentration of total surfactants. Units:'mg/l'"
        },
        "Zn": {
          "type": "number",
          "minimum": 0,
          "description": "Property. Zinc. Concentration of zinc. Units:'mg/l'"
        },
        "componentAnalyzed": {
          "type": "string",
          "description": "Property. The component symbol analyzed in the sample"
        },
        "componentName": {
          "type": "string",
          "description": "Property. The component full name analyzed in the sample"
        },
        "concentration": {
          "type": "number",
          "description": "Property. The concentration of the component analyzed in the sample. Units:'mg/l'"
        }
      }
    }
  ],
  "required": [
    "id",
    "type",
    "dateObserved",
    "location"
  ]
}