columna API reference - v0.4.1
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    Interface GeneralizedVarianceResult

    interface GeneralizedVarianceResult {
        center: number;
        lcl: number;
        outOfControl: number[];
        type: "generalized variance";
        ucl: number;
        values: number[];
    }
    Index
    center: number
    lcl: number
    outOfControl: number[]
    type: "generalized variance"
    ucl: number
    values: number[]

    |S| per subgroup.