<tr><td class="head_mid" align="center" nowrap="">Colour</td><td class="head_mid" align="center" nowrap="">Hz</td><td class="head_mid" align="center" nowrap="">Colour</td><td class="head_mid" align="center" nowrap="">µs</td><td class="head_mid" align="center" nowrap="">Colour</td><td class="head_mid" align="center" nowrap="">Hz</td></tr> | <tr><td class="head_mid" align="center" nowrap="">Colour</td><td class="head_mid" align="center" nowrap="">Hz</td><td class="head_mid" align="center" nowrap="">Colour</td><td class="head_mid" align="center" nowrap="">µs</td><td class="head_mid" align="center" nowrap="">Colour</td><td class="head_mid" align="center" nowrap="">Hz</td></tr> |