condition mean min max ZT0-3 0.3523133333333333 0.0 1.05694 ZT4-7 0.4811975 0.4811975 0.4811975 ZT8-11 0.0 0.0 0.0 ZT12-15 0.55492 0.54948 0.56036 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0