condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.08864807599999999 0.0 0.17729615199999998 ZT8-11 0.17645658125000002 0.089694162 0.2632190005 ZT12-15 0.18582998575 0.18327700600000002 0.1883829655 ZT16-19 0.33148805149999994 0.1584611675 0.5045149354999999 ZT20-23 0.49568243125 0.388051226 0.6033136365