condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.013900827999999999 0.0 0.027801655999999998 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0108820355 0.0 0.021764071 ZT16-19 0.015134629000000002 0.0 0.030269258000000004 ZT20-23 0.008750854166666667 0.0 0.017501708333333334