condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.03305120833333333 0.03305120833333333 0.03305120833333333 ZT12-15 0.015266 0.015266 0.015266 ZT16-19 0.04498975 0.04498975 0.04498975 ZT20-23 0.0 0.0 0.0