condition mean min max ZT0-3 5.25089 5.180645 5.321135 ZT4-7 3.219965 3.219965 3.219965 ZT8-11 5.126725 5.126725 5.126725 ZT12-15 0 0 0 ZT16-19 8.32081 8.32081 8.32081 ZT20-23 5.99587 5.99587 5.99587