Plot.plot({
y: {
grid: true,
label: "↑ Temperature (°F)"
},
marks: [
Plot.lineY(sftemp, {x: "date", y: "low", strokeOpacity: 0.3}),
Plot.lineY(sftemp, Plot.windowY({k: 28, reduce: "min"}, {x: "date", y: "low", stroke: "blue"})),
Plot.lineY(sftemp, Plot.windowY({k: 28, reduce: "max"}, {x: "date", y: "low", stroke: "red"})),
Plot.lineY(sftemp, Plot.windowY({k: 28, reduce: "median"}, {x: "date", y: "low"}))
]
})