condition mean min max ZT0-3 0.8019259999999999 0.8019259999999999 0.8019259999999999 ZT4-7 0.064462 0.064462 0.064462 ZT8-11 0.0 0.0 0.0 ZT12-15 0.7328779999999999 0.7328779999999999 0.7328779999999999 ZT16-19 0.7033435 0.7033435 0.7033435 ZT20-23 1.4047550000000002 1.4047550000000002 1.4047550000000002