condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.08386383 0.0 0.16772766 ZT8-11 0.0 0.0 0.0 ZT12-15 0.05966226333333333 0.0 0.11932452666666667 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0