low

The upper numeric bound of the low end of the measured range. This must be greater than the minimum value (<code>min</code> attribute), and it also must be less than the high value and maximum value (<code>high</code> attribute and <code>max</code> attribute, respectively), if any are specified. If unspecified, or if less than the minimum value, the <code>low</code> value is equal to the minimum value.