l holiday
</td>
</tr>
<tr>
<td style="text-align:left;">
<code>is_weekend</code>
</td>
<td style="text-align:left;">
<code>TRUE</code> being Saturday or Sunday
</td>
</tr>
<tr>
<td style="text-align:left;">
<code>is_holiday</code>
</td>
<td style="text-align:left;">
<code>TRUE</code> being an official holiday in the UK
</td>
</tr>
<tr>
<td style="text-align:left;">
<code>temp</code>
</td>
<td style="text-align:left;">
Average air temperature (°C)
</td>
</tr>
<tr>
<td style="text-align:left;">
<code>temp_fe