="https://cdnjs.cloudflare.com/ajax/libs/crossfilter/1.3.12/crossfilter.min.js"
></script> 

<script 
    src="https://unpkg.com/leaflet@1.0.0-rc.3/dist/leaflet.js"
></script>

<script 
    src="https://code.jquery.com/jquery-2.2.4.min.js" 
    integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44=" 
    crossorigin="anonymous"
></script>

<script
    src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"
></script>
    
<script
    src="https://rawgit.com/NickQiZhu/dc.js