condition mean min max ZT0-3 0.00468700575 0.0 0.0093740115 ZT4-7 0.00818161375 0.0 0.0163632275 ZT8-11 0.0 0.0 0.0 ZT12-15 0.00531135075 0.0 0.0106227015 ZT16-19 0.0200581115 0.0 0.040116223 ZT20-23 0.0096890065 0.0 0.019378013