condition mean min max ZT0-3 0.42720275 0.28230350000000004 0.572102 ZT4-7 0.577697 0.577697 0.577697 ZT8-11 0.1454615 0.1454615 0.1454615 ZT12-15 0 0 0 ZT16-19 0.2817975 0.2817975 0.2817975 ZT20-23 0.9910885 0.9910885 0.9910885