https://remotepixel.ca/projects/landsat8ndvi.html
console.log("cloud,date,ndvi");
for (var i = 0; i < scope.ndvi_values.length; i++) {
console.log( scope.ndvi_values[i].cloud + "," + scope.ndvi_values[i].date + "," + scope.ndvi_values[i].ndvi );
}