condition mean min max ZT0-3 0.6275425 0.6275425 0.6275425 ZT4-7 0.3960475 0.3960475 0.3960475 ZT8-11 0.136863 0.136863 0.136863 ZT12-15 0.380599 0.380599 0.380599 ZT16-19 0.40911549999999997 0.40911549999999997 0.40911549999999997 ZT20-23 0.7990235 0.7990235 0.7990235