{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://example.invalid/novus/scientific/measurement-schema.json",
  "title": "Spectrometer absorbance row",
  "description": "Column contract for the paired absorbance CSV, including physical units.",
  "type": "object",
  "required": [
    "wavelength_nm",
    "absorbance_AU",
    "u_absorbance_AU_k2",
    "instrument_id"
  ],
  "additionalProperties": false,
  "properties": {
    "wavelength_nm": {
      "type": "number",
      "unit": "nm",
      "minimum": 190,
      "maximum": 1100
    },
    "absorbance_AU": {
      "type": "number",
      "unit": "AU",
      "minimum": -0.1,
      "maximum": 4.0
    },
    "u_absorbance_AU_k2": {
      "type": "number",
      "unit": "AU",
      "minimum": 0,
      "coverageFactor": 2,
      "confidenceLevel": "95%"
    },
    "blank_corrected": {
      "type": "boolean"
    },
    "instrument_id": {
      "type": "string",
      "pattern": "^NX-[A-Z]+-SYNTH-[0-9]{2}$"
    },
    "flag": {
      "type": "string",
      "enum": [
        "ok",
        "near_saturation",
        "saturated",
        "suspect"
      ]
    }
  }
}