title: "Outdoor Fractions"
showAbove: true
height: 200
data: 
  zip: "summaries.zip"
  url: "$RUN$.outdoorFraction.tsv"
mark: 
  type: "point"
  strokeWidth: 3
  tooltip: true
encoding: 
  x: { field: "date", type: "temporal"}
  y: { field: "outdoorFraction" }