app.piedata = {
    "id" : "zing-pie",
    "labels": ["No Data (Index 0)","Low (Index 1)","Low (Index 2)","Low (Index 3)"],
    "data" :  [10,77,3,10],
    "tooltips" :  ["10 sites","76 sites","3 sites","10 sites"],
    "colors": ["#CCCCCC","#9CFF9C","#31FF00","#31CF00"]
};