
#[
#import "@preview/tablex:0.0.8": tablex, cellx, hlinex

#tablex(
    columns: 3,
    auto-vlines: false,
    auto-hlines: false,
    column-gutter: 0.25em,
    hlinex(y: 0, stroke: 1pt),
    cellx(colspan: 1, x: 0, y: 0, align: left + top)[*Group 1*],
    cellx(colspan: 1, x: 2, y: 0, align: center + top)[*value1*],
    hlinex(y: 1, stroke: 0.75pt),
    cellx(colspan: 1, x: 0, y: 1, align: left + top)[a],
    cellx(colspan: 1, x: 1, y: 1, align: left + top)[*mean*],
    cellx(colspan: 1, x: 2, y: 1, align: center + top)[2.5],
    cellx(colspan: 1, x: 1, y: 2, align: left + top)[*std*],
    cellx(colspan: 1, x: 2, y: 2, align: center + top)[1.29],
    cellx(colspan: 1, x: 0, y: 3, align: left + top)[b],
    cellx(colspan: 1, x: 1, y: 3, align: left + top)[*mean*],
    cellx(colspan: 1, x: 2, y: 3, align: center + top)[6.5],
    cellx(colspan: 1, x: 1, y: 4, align: left + top)[*std*],
    cellx(colspan: 1, x: 2, y: 4, align: center + top)[1.29],
    hlinex(y: 5, stroke: 1pt),

)
]
