Plot.plot({
marks: [
Plot.dot(penguins, {x:"culmen_depth_mm", y: "body_mass_g", fill: "sex"}),
Plot.ruleY([5750]),
Plot.textY([5750], {text: d => "chonky penguins", lineAnchor: "bottom"}),
Plot.ruleX([d3.median(penguins, d => d.culmen_depth_mm)]),
]
})