1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
2<html lang="en">
3<head>
4<title>aert1.0/5.1.2</title>
5</head>
6<body>
7
8<table summary="This data table is missing one row header">
9	<caption>This data table is missing one row header</caption>
10	
11	<tr>
12		<th>age</th><td>10</td><td>15</td><td>20</td>
13	</tr>
14	<tr>
15		<td>height</td><td>1.3 m</td><td>1.8 m</td><td>2.1 m</td>
16	</tr>
17	<tr>
18		<th>weight</th><td>50 kg</td><td>75 kg.</td><td>100 kg.</td>
19	</tr>
20</table>
21
22</body>
23</html>
24