condition mean min max ZT0-3 0.12407566666666665 0.0 0.372227 ZT4-7 0.304529 0.304529 0.304529 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.72533 0.72533 0.72533