Hi,
You can use advanced.dataExportFunction
to manipulate the data before the export:
dataExportFunction: function(data,callback) {
for (var i = 0; i < data.length; i++) {
if(i == 0) {
data[i][1] = "Name of the time column"
continue;
}
}
callback(data);
}
http://jsfiddle.net/pj6o431c/1/
Janis