condition mean min max ZT0-3 0.0126733 0.0126733 0.0126733 ZT4-7 0.02947095 0.02947095 0.02947095 ZT8-11 0.0 0.0 0.0 ZT12-15 0.03418655 0.03418655 0.03418655 ZT16-19 0.0778063 0.0778063 0.0778063 ZT20-23 0.05126475 0.05126475 0.05126475