Vascular age vs real age

<!DOCTYPE html>
<head>
  <title>Vega Lite Bar Chart</title>
  <meta charset="utf-8">

"data": {
    "url": "https://raw.githubusercontent.com/wei2517/around-Yintung-community/master/differenceagename.csv"
  },

"vconcat": [
  {
    "title":"Real age(column) vs Vascular age(red line)",
  "width": 300,
  "height": 200,
   "layer": [
    {
      "mark": {
        "type": "bar",
        "point": true
      },
      "encoding": {
        "x": {
          "field": "Subjects",
          "type": "nominal"
        },
        "y": {
          "field": "Real age",
          "type": "quantitative"
        },
         "color": {"value": "lightblue"}
      }
    },
    {
      "mark": {
        "type": "line",
        "point": true
      },
      "encoding": {
        "x": {
          "field": "Subjects",
          "type": "nominal"
        },
        "y": {
          "field": "Vascular age",
          "type": "quantitative"
        },
        "color": {"value": "red"}
      }
    }
  ]
  }, 
     
  {
  "layer": [
    {  "title":"Real age(green line) vs Vascular age(red line)",
      "mark": {
        "type": "line",
        "point": true
      },
      "encoding": {
        "x": {
          "field": "Subjects",
          "type": "nominal"
        },
        "y": {
          "field": "Real age",
          "type": "quantitative"
        },
         "color": {"value": "green"}
      }
    },
    {
      "mark": {
        "type": "line",
        "point": true
      },
      "encoding": {
        "x": {
          "field": "Subjects",
          "type": "nominal"
        },
        "y": {
          "field": "Vascular age",
          "type": "quantitative"
        },
        "color": {"value": "red"}
      }
    }
  ]
  }
   ]
  };
  // Embed the visualization in the container with id `vis`
  vegaEmbed("#vis", vlSpec);
  </script>
  
  
</body>
</html>

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https://cdn.jsdelivr.net/npm/vega-lite@2.5.0/build/vega-lite.js

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