Basic Crossfilter with NaN values

HTML

<script src="https://rawgit.com/square/crossfilter/master/crossfilter.js"></script>
<div>
    NA Records
    <ul id="records">
    </ul>
</div>

JavaScript

var data = crossfilter([
        {date: "2011-11-14T16:17:54Z", quantity: 2, total: 190, tip: 100, type: "tab"},
        {date: "2011-11-14T16:20:19Z", quantity: 2, total: NaN, tip: 100, type: "tab"},
        {date: "2011-11-14T16:28:54Z", quantity: 1, total: 300, tip: 200, type: "visa"},
        {date: "2011-11-14T16:30:43Z", quantity: 2, total: 90, tip: 0, type: "tab"},
        {date: "2011-11-14T16:48:46Z", quantity: 2, total: 90, tip: 0, type: "tab"},
        {date: "2011-11-14T16:53:41Z", quantity: 2, total: 90, tip: 0, type: "tab"},
        {date: "2011-11-14T16:54:06Z", quantity: 1, total: NaN, tip: null, type: "cash"},
        {date: "2011-11-14T17:02:03Z", quantity: 2, total: 90, tip: 0, type: "tab"},
        {date: "2011-11-14T17:07:21Z", quantity: 2, total: 90, tip: 0, type: "tab"},
        {date: "2011-11-14T17:22:59Z", quantity: 2, total: 90, tip: 0, type: "tab"},
        {date: "2011-11-14T17:25:45Z", quantity: 2, total: 200, tip: null, type: "cash"},
        {date: "2011-11-14T17:29:52Z", quantity: 1, total: 200, tip: 100, type: "visa"}]);

try {
    var total_dimension = data.dimension(function(d) { return d.total; });
    var na_records = total_dimension.filter(90).top(Infinity);
    var elRecords = $('ul#records'); 
    elRecords.empty();
    for (var i = 0; i < na_records.length; i++) {
        $('<li>', { text : na_records[i].total}).appendTo(elRecords);   
    }
} catch (e) {
    console.log(e);
}