condition mean min max ZT0-3 0.35284375 0.33639600000000003 0.3692915 ZT4-7 0.796569 0.796569 0.796569 ZT8-11 0.6274405000000001 0.6274405000000001 0.6274405000000001 ZT12-15 0 0 0 ZT16-19 0.5310105 0.5310105 0.5310105 ZT20-23 0.7579625 0.7579625 0.7579625