Where is this data coming from? What kind of listing snippet are you using to display it?
Basically, what you have is two parts: the outer part, the UL tags:
<ul class="list-unstyled timeTableFilters">
???
</ul>
This may be a chunk tpl, in the case of Wayfinder, which concerns itself with the outer containing element, or simply entered in the template itself, in the case of getResources which only concerns itself with the actual listed items, not their outer containing element.
And the inner LI parts, which have variable attributes and content:
<li data-filter="[[+variable]]">[[+text]]</li>
The "variable" bit can come from a TV, or if the data is taken from resources, even the alias of the resource ([[+tv.data-filter]] or [[+alias]]). And the "text" bit can likewise come from any field, such as [[+menutitle]].