condition mean min max ZT0-3 0.010384783333333333 0.0 0.015591 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0160728 0.0160728 0.0160728 ZT12-15 0.033396474999999995 0.0 0.06679294999999999 ZT16-19 0.0155242 0.0155242 0.0155242 ZT20-23 0.0 0.0 0.0