# compute sum, average, var, std dev, min and max
BEGIN { 
	FS=";"; 
	nbr = 0 
}
/^#/ { print "comment", $0 }
/^[+|-]?[1-9]+[.]?[0-9]*?/{  
	my_array[++nbr] = $1;
}
END {
	print "there are ", nbr, "elements"
	sum = 0;
	min = max = my_array[1]
	
	for (i in my_array) {
		value = my_array[i]
		print i, value
		sum += value

		if (value < min) min = value
		if (value > max) max = value
	}
	
	avg = sum / nbr

	var = 0
	for (i in my_array) {
		var += (my_array[i] - avg) * (my_array[i] - avg)
	}
	std = sqrt(var / nbr)
	print "---------------"
	print nbr, ";", sum, ";", avg, ";", var, ";", std, ";", min, ";", max
}