{ "$schema": "https://vega.github.io/schema/vega-lite/v4.json", "description": "", "data": { "url": "data/weather.csv" }, "repeat": [ "temp_max", "precipitation", "wind" ], "spec": { "mark": "line", "encoding": { "x": {"field": "date", "timeUnit": "month"}, "y": { "field": {"repeat": "repeat"}, "aggregate": "mean" }, "color": {"field": "location"} } }}