bin1.vl

{
    "mark": "bar",
    "data": {
        "values": [
            {
                "bin_start": 8,
                "count": 7,
                "bin_end": 10
            },
            {
                "bin_start": 10,
                "count": 29,
                "bin_end": 12
            },
            {
                "bin_start": 12,
                "count": 71,
                "bin_end": 14
            },
            {
                "bin_start": 14,
                "count": 127,
                "bin_end": 16
            },
            {
                "bin_start": 16,
                "count": 94,
                "bin_end": 18
            },
            {
                "bin_start": 18,
                "count": 54,
                "bin_end": 20
            },
            {
                "bin_start": 20,
                "count": 17,
                "bin_end": 22
            },
            {
                "bin_start": 22,
                "count": 5,
                "bin_end": 24
            }
        ]
    },
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "encoding": {
        "x2": {
            "field": "bin_end"
        },
        "x": {
            "field": "bin_start",
            "bin": "binned",
            "type": "quantitative",
            "axis": {
                "tickMinStep": 2
            }
        },
        "y": {
            "field": "count",
            "type": "quantitative"
        }
    }
}