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  <head>
    <title>histogram-sk</title>
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    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
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  <body class="body-sk">
    <h1>histogram-sk</h1>
    <histogram-sk></histogram-sk>

    <h2>Events</h2>
    <pre id="events"></pre>
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