MJS2020 solar testje @ DeWAR

spec.json

{
  "$schema": "https://vega.github.io/schema/vega-lite/v4.json",
  "description": "MJS2020 data",
  "data": {
    "url": "https://meetjestad.net/data/?type=sensors&ids=2001,2003,2004,2005,2006&begin=2020-12-05,00:00&format=json"
  },
  "transform": [{"calculate": "datum.extra[9]/1000", "as": "solar"}],
  "config": {"mark": {"tooltip": {"content": "data"}}, "point": {"size": 1}},
  "facet": {"field": "id"},
  "spec": {
    "vconcat": [
      {
        "title": "Drag to zoom, click to reset",
        "width": 500,
        "height": 50,
        "mark": {
          "type": "point",
          "color": "red",
          "tooltip": {"content": "data"}
        },
        "encoding": {
          "x": {"field": "timestamp", "type": "temporal"},
          "y": {
            "field": "temperature",
            "type": "quantitative",
            "axis": {"titleColor": "red"},
            "scale": {"zero": false}
          }
        },
        "selection": {"daterange": {"type": "interval", "encodings": ["x"]}}
      },
      {
        "title": "Temperature & Humidity",
        "width": 500,
        "height": 200,
        "encoding": {
          "x": {
            "field": "timestamp",
            "type": "temporal",
            "scale": {"domain": {"selection": "daterange"}}
          }
        },
        "layer": [
          {
            "mark": {"type": "point", "color": "red"},
            "encoding": {
              "y": {
                "field": "temperature",
                "type": "quantitative",
                "axis": {"titleColor": "red"}
              }
            },
            "selection": {"dummy_to_fix_tooltip": {"type": "interval"}}
          },
          {
            "mark": {"type": "point", "color": "blue"},
            "encoding": {
              "y": {
                "field": "humidity",
                "type": "quantitative",
                "axis": {"titleColor": "blue"}
              }
            },
            "selection": {"dummy_to_fix_tooltip2": {"type": "interval"}}
          }
        ],
        "resolve": {"scale": {"y": "independent"}}
      },
      {
        "title": "Voltages",
        "width": 500,
        "height": 200,
        "transform": [
          {"fold": ["supply", "battery", "solar"], "as": ["field", "voltage"]}
        ],
        "mark": {"type": "point", "color": "red"},
        "encoding": {
          "x": {
            "field": "timestamp",
            "type": "temporal",
            "scale": {"domain": {"selection": "daterange"}}
          },
          "y": {"field": "voltage", "type": "quantitative"},
          "color": {"field": "field", "legend": {"title": "Voltages"}}
        },
        "selection": {"dummy_to_fix_tooltip": {"type": "interval"}}
      }
    ]
  }
}