{
    "data_id": "42933",
    "name": "Beijing-Multi-Site-Air-Quality",
    "exact_name": "Beijing-Multi-Site-Air-Quality",
    "version": 1,
    "version_label": null,
    "description": "This data set includes hourly air pollutants data from 12nationally-controlled air-quality monitoring sites.",
    "format": "arff",
    "uploader": "Hage Tuin",
    "uploader_id": 25579,
    "visibility": "public",
    "creator": "\"Song Xi Chen, csx '@' gsm.pku.edu.cn, Guanghua School of Management, Center for Statistical Science, Peking University.\"",
    "contributor": null,
    "date": "2021-05-25 08:52:02",
    "update_comment": null,
    "last_update": "2021-05-25 08:52:02",
    "licence": "Public",
    "status": "active",
    "error_message": null,
    "url": "https:\/\/www.openml.org\/data\/download\/22045582\/dataset",
    "default_target_attribute": null,
    "row_id_attribute": null,
    "ignore_attribute": null,
    "runs": 0,
    "suggest": {
        "input": [
            "Beijing-Multi-Site-Air-Quality",
            "This data set includes hourly air pollutants data from 12nationally-controlled air-quality monitoring sites. "
        ],
        "weight": 5
    },
    "qualities": {
        "NumberOfInstances": 420768,
        "NumberOfFeatures": 18,
        "NumberOfClasses": null,
        "NumberOfMissingValues": 74027,
        "NumberOfInstancesWithMissingValues": 38600,
        "NumberOfNumericFeatures": 16,
        "NumberOfSymbolicFeatures": 0,
        "Dimensionality": 4.277891854893908e-5,
        "PercentageOfNumericFeatures": 88.88888888888889,
        "MajorityClassPercentage": null,
        "PercentageOfSymbolicFeatures": 0,
        "MajorityClassSize": null,
        "MinorityClassPercentage": null,
        "MinorityClassSize": null,
        "NumberOfBinaryFeatures": 0,
        "PercentageOfBinaryFeatures": 0,
        "PercentageOfInstancesWithMissingValues": 9.17370142216138,
        "AutoCorrelation": null,
        "PercentageOfMissingValues": 0.9774058652538005
    },
    "tags": [
        {
            "uploader": "38960",
            "tag": "Images"
        },
        {
            "uploader": "38960",
            "tag": "Life Science"
        }
    ],
    "features": [
        {
            "name": "No",
            "index": "0",
            "type": "numeric",
            "distinct": "35064",
            "missing": "0",
            "min": "1",
            "max": "35064",
            "mean": "17533",
            "stdev": "10122"
        },
        {
            "name": "year",
            "index": "1",
            "type": "numeric",
            "distinct": "5",
            "missing": "0",
            "min": "2013",
            "max": "2017",
            "mean": "2015",
            "stdev": "1"
        },
        {
            "name": "month",
            "index": "2",
            "type": "numeric",
            "distinct": "12",
            "missing": "0",
            "min": "1",
            "max": "12",
            "mean": "7",
            "stdev": "3"
        },
        {
            "name": "day",
            "index": "3",
            "type": "numeric",
            "distinct": "31",
            "missing": "0",
            "min": "1",
            "max": "31",
            "mean": "16",
            "stdev": "9"
        },
        {
            "name": "hour",
            "index": "4",
            "type": "numeric",
            "distinct": "24",
            "missing": "0",
            "min": "0",
            "max": "23",
            "mean": "12",
            "stdev": "7"
        },
        {
            "name": "PM2.5",
            "index": "5",
            "type": "numeric",
            "distinct": "888",
            "missing": "8739",
            "min": "2",
            "max": "999",
            "mean": "80",
            "stdev": "81"
        },
        {
            "name": "PM10",
            "index": "6",
            "type": "numeric",
            "distinct": "1084",
            "missing": "6449",
            "min": "2",
            "max": "999",
            "mean": "105",
            "stdev": "92"
        },
        {
            "name": "SO2",
            "index": "7",
            "type": "numeric",
            "distinct": "691",
            "missing": "9021",
            "min": "0",
            "max": "500",
            "mean": "16",
            "stdev": "22"
        },
        {
            "name": "NO2",
            "index": "8",
            "type": "numeric",
            "distinct": "1212",
            "missing": "12116",
            "min": "1",
            "max": "290",
            "mean": "51",
            "stdev": "35"
        },
        {
            "name": "CO",
            "index": "9",
            "type": "numeric",
            "distinct": "132",
            "missing": "20701",
            "min": "100",
            "max": "10000",
            "mean": "1231",
            "stdev": "1160"
        },
        {
            "name": "O3",
            "index": "10",
            "type": "numeric",
            "distinct": "1598",
            "missing": "13277",
            "min": "0",
            "max": "1071",
            "mean": "57",
            "stdev": "57"
        },
        {
            "name": "TEMP",
            "index": "11",
            "type": "numeric",
            "distinct": "2034",
            "missing": "398",
            "min": "-20",
            "max": "42",
            "mean": "14",
            "stdev": "11"
        },
        {
            "name": "PRES",
            "index": "12",
            "type": "numeric",
            "distinct": "726",
            "missing": "393",
            "min": "982",
            "max": "1043",
            "mean": "1011",
            "stdev": "10"
        },
        {
            "name": "DEWP",
            "index": "13",
            "type": "numeric",
            "distinct": "645",
            "missing": "403",
            "min": "-43",
            "max": "29",
            "mean": "2",
            "stdev": "14"
        },
        {
            "name": "RAIN",
            "index": "14",
            "type": "numeric",
            "distinct": "253",
            "missing": "390",
            "min": "0",
            "max": "73",
            "mean": "0",
            "stdev": "1"
        },
        {
            "name": "wd",
            "index": "15",
            "type": "string",
            "distinct": "16",
            "missing": "1822"
        },
        {
            "name": "WSPM",
            "index": "16",
            "type": "numeric",
            "distinct": "117",
            "missing": "318",
            "min": "0",
            "max": "13",
            "mean": "2",
            "stdev": "1"
        },
        {
            "name": "station",
            "index": "17",
            "type": "string",
            "distinct": "12",
            "missing": "0"
        }
    ],
    "nr_of_issues": 0,
    "nr_of_downvotes": 0,
    "nr_of_likes": 0,
    "nr_of_downloads": 0,
    "total_downloads": 0,
    "reach": 0,
    "reuse": 0,
    "impact_of_reuse": 0,
    "reach_of_reuse": 0,
    "impact": 0
}