public class AverageLighting {
    public static void main(String[] args) {
	sumreduction float s=0;
	sumreduction int n=0;
	spatialview sv=Sensor @ SpaceDefs.CampusB % 320;
	visiteach x : sv
	    { s+=x.getValue();n++; }
	if (n>0)
	    System.out.println(Float.toString(s/n));
        else
	    System.out.println("No sensor service found.");
    }
}