condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 2.8145 2.8145 2.8145 ZT8-11 0.0 0.0 0.0 ZT12-15 1.606945 0.0 3.21389 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0