HTML Tidy accessibility-check 1.0/5.1.2

This file demonstrates a data table this is missing row/column headers.

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">
<html lang="en">
<head>
<title>alert 1.0/5.1.2</title>
</head>
<body>

<table width="70%" border="1" summary="This data table is missing row/column headers">
    <caption>This data table is missing row/column headers</caption>

    <tr>
        <td width="33%">age   </td>
        <td width="33%">height</td>
        <td width="34%">weight</td>
    </tr>      

    <tr>
        <td>10</td>
        <td>1.3 m</td>
        <td> 50 kg.</td>
    </tr><tr>
        <td>15</td>
        <td>1.8 m</td>
        <td> 75 kg.</td>
    </tr><tr>
        <td>20</td>
        <td>2.1 m</td>
        <td>100 kg.</td>
    </tr>

</table>

</body>
</html>