{
  "missingness": {
    "additional_charges": {
      "count": 0,
      "rate": 0.0
    },
    "airport_fee": {
      "count": 300,
      "rate": 1.0
    },
    "airport_trip": {
      "count": 34,
      "rate": 0.11333333333333333
    },
    "dispatching_base_id": {
      "count": 300,
      "rate": 1.0
    },
    "driver_pay": {
      "count": 300,
      "rate": 1.0
    },
    "dropoff_census_tract": {
      "count": 135,
      "rate": 0.45
    },
    "dropoff_census_tract_missing_or_suppressed": {
      "count": 0,
      "rate": 0.0
    },
    "dropoff_datetime": {
      "count": 0,
      "rate": 0.0
    },
    "dropoff_datetime_utc": {
      "count": 0,
      "rate": 0.0
    },
    "dropoff_zone_id": {
      "count": 30,
      "rate": 0.1
    },
    "dropoff_zone_missing": {
      "count": 0,
      "rate": 0.0
    },
    "fare": {
      "count": 0,
      "rate": 0.0
    },
    "fare_on_declared_grid": {
      "count": 0,
      "rate": 0.0
    },
    "pickup_census_tract": {
      "count": 131,
      "rate": 0.43666666666666665
    },
    "pickup_census_tract_missing_or_suppressed": {
      "count": 0,
      "rate": 0.0
    },
    "pickup_datetime": {
      "count": 0,
      "rate": 0.0
    },
    "pickup_datetime_utc": {
      "count": 0,
      "rate": 0.0
    },
    "pickup_on_15_minute_grid": {
      "count": 0,
      "rate": 0.0
    },
    "pickup_zone_id": {
      "count": 13,
      "rate": 0.043333333333333335
    },
    "pickup_zone_missing": {
      "count": 0,
      "rate": 0.0
    },
    "provider_id": {
      "count": 300,
      "rate": 1.0
    },
    "record_id_is_surrogate": {
      "count": 0,
      "rate": 0.0
    },
    "reported_fare_rounding_increment": {
      "count": 0,
      "rate": 0.0
    },
    "reported_timestamp_rounding_minutes": {
      "count": 0,
      "rate": 0.0
    },
    "reported_tip_rounding_increment": {
      "count": 0,
      "rate": 0.0
    },
    "request_datetime": {
      "count": 300,
      "rate": 1.0
    },
    "service_date": {
      "count": 0,
      "rate": 0.0
    },
    "service_day_of_week": {
      "count": 0,
      "rate": 0.0
    },
    "service_month": {
      "count": 0,
      "rate": 0.0
    },
    "service_year": {
      "count": 0,
      "rate": 0.0
    },
    "shared_matched": {
      "count": 0,
      "rate": 0.0
    },
    "shared_requested": {
      "count": 0,
      "rate": 0.0
    },
    "source": {
      "count": 0,
      "rate": 0.0
    },
    "source_dataset_id": {
      "count": 0,
      "rate": 0.0
    },
    "source_timezone": {
      "count": 0,
      "rate": 0.0
    },
    "taxes_and_surcharges": {
      "count": 300,
      "rate": 1.0
    },
    "tips": {
      "count": 0,
      "rate": 0.0
    },
    "tolls": {
      "count": 300,
      "rate": 1.0
    },
    "total_amount": {
      "count": 0,
      "rate": 0.0
    },
    "trip_id": {
      "count": 0,
      "rate": 0.0
    },
    "trip_miles": {
      "count": 0,
      "rate": 0.0
    },
    "trip_seconds": {
      "count": 0,
      "rate": 0.0
    },
    "trips_pooled": {
      "count": 0,
      "rate": 0.0
    },
    "zone_type": {
      "count": 0,
      "rate": 0.0
    }
  },
  "rounding": {
    "declared_fare_rounding_increments": [
      2.5
    ],
    "declared_timestamp_rounding_minutes": [
      15
    ],
    "fare_on_declared_grid_rate": 1.0,
    "interpretation": "Grid conformance verifies reported-value patterns; it does not recover latent exact fares or timestamps.",
    "pickup_on_15_minute_grid_rate": 1.0
  },
  "row_count": 300,
  "schema_version": "1.0.0",
  "source_caveats": {
    "chicago_tnp": {
      "airport_activity": "left unknown when a missing endpoint prevents ruling airport activity in or out",
      "census_tracts": "may be suppressed; blanks also occur outside Chicago",
      "fare": "rounded to nearest $2.50",
      "timestamps": "rounded to nearest 15 minutes",
      "tips": "rounded to nearest $1.00"
    }
  },
  "sources": [
    "chicago_tnp"
  ],
  "suppression_or_nonreporting": {
    "dropoff_census_tract_count": 135,
    "dropoff_census_tract_rate": 0.45,
    "dropoff_indicator_known_count": 300,
    "dropoff_indicator_status": "available",
    "interpretation": "Null availability indicators mean the source does not report the field; they must not be recoded as unsuppressed. Chicago blank census tracts may be privacy-suppressed or outside Chicago, and no record-level mechanism is claimed.",
    "pickup_census_tract_count": 131,
    "pickup_census_tract_rate": 0.43666666666666665,
    "pickup_indicator_known_count": 300,
    "pickup_indicator_status": "available"
  },
  "validity": {
    "duplicate_trip_id_count": 0,
    "missing_trip_id_count": 0,
    "negative_fare_count": 0,
    "negative_trip_miles_count": 0,
    "nonpositive_trip_seconds_count": 0,
    "utc_conversion_null_count": 0
  }
}