{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/aerodatabox/refs/heads/main/json-schema/aerodatabox-flight-batch-delay-contract-schema.json",
  "title": "FlightBatchDelayContract",
  "description": "Delay information about a batch of flights",
  "type": "object",
  "properties": {
    "numTotal": {
      "type": "integer",
      "description": "Total number of flights in the the batch (including cancelled)",
      "format": "int32"
    },
    "numQualifiedTotal": {
      "type": "integer",
      "description": "Total number of flights in the batch, which were used to to calculate the\r\ndelay information (including cancelled). Should equal to or less than `NumTotal`.\r\n\r\nThe closer the value of this property to the value of `NumTotal`, the higher the\r\nreliability of delay information",
      "format": "int32"
    },
    "numCancelled": {
      "type": "integer",
      "description": "Total amount of flights in the batch",
      "format": "int32"
    },
    "medianDelay": {
      "type": "string",
      "description": "Median delay of flights in the batch (format: [-]hh:mm:ss).\r\nValue can be negative (therefore, means early occurence).",
      "format": "date-span",
      "nullable": true
    },
    "delayIndex": {
      "type": "number",
      "description": "Normalized value on scale from 0.0 to 5.0 which corresponds with current amount of delays and cancellations in a given batch of flights (the less - the better).",
      "format": "float",
      "nullable": true
    }
  },
  "required": [
    "numCancelled",
    "numQualifiedTotal",
    "numTotal"
  ],
  "additionalProperties": false
}