condition mean min max ZT0-3 0.01798642925 0.0 0.0359728585 ZT4-7 0.0461285645 0.0 0.092257129 ZT8-11 0.0 0.0 0.0 ZT12-15 0.010204626666666666 0.0 0.020409253333333332 ZT16-19 0.0203590405 0.0 0.040718081 ZT20-23 0.0 0.0 0.0