condition mean min max ZT0-3 16.341250000000002 16.341250000000002 16.341250000000002 ZT4-7 2.288375 2.288375 2.288375 ZT8-11 0.0 0.0 0.0 ZT12-15 2.264365 2.264365 2.264365 ZT16-19 13.99723 13.99723 13.99723 ZT20-23 25.68235 25.68235 25.68235