BEGIN {
	IGNORECASE = 1;			# Ignore case in string comparisons.
	FS = ",";				# Initialize the field separator.
	OFS = ",";				# Initialize the output field separator.
	Sum=0;
}

NR == 1 {
	for(I=1; I<=15; I++) {
		Count[I]=0;
	}
}

{
	Subset=$5
	for(I=1; I<=15; I++) {
	target="-"I"-";
	if (index(Subset, target)!=0) {
		Count[I]++;
		Sum++;
		}
	}
}

END {
	print "Average # of Attributes Used:"
	print Sum/NR
	print " "
	
	print "Average # of Dropped Attributes:"
	print 15-(Sum/NR)
	print " "
	
	print "Percentage of Times Each Attribute is Dropped:"
	for(I=1; I<=15; I++) {
		print I" : " 100*(1-(Count[I]/NR))"%"
	}
}