{
    "mark": {
        "extent": "stdev",
        "type": "errorbar",
        "ticks": {
            "stroke": "blue"
        }
    },
    "data": {
        "url": "https://vega.github.io/vega-lite/data/barley.json"
    },
    "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
    "encoding": {
        "x": {
            "field": "yield",
            "scale": {
                "zero": false
            },
            "type": "quantitative"
        },
        "y": {
            "field": "variety",
            "type": "ordinal"
        }
    }
}