condition mean min max ZT0-3 0.01216515 0.0074483 0.01453645 ZT4-7 0.0071119 0.0071119 0.0071119 ZT8-11 0.0 0.0 0.0 ZT12-15 0.00406055 0.0 0.0081211 ZT16-19 0.0 0.0 0.0 ZT20-23 0.00786975 0.00786975 0.00786975