condition mean min max ZT0-3 0.13405913975 0.0 0.2681182795 ZT4-7 0.4382604545 0.43470947700000007 0.44181143199999995 ZT8-11 0.6157678174999999 0.38502922799999995 0.8465064069999999 ZT12-15 14.744003306 12.233325587 17.254681025 ZT16-19 12.28019381075 11.357262881499999 13.20312474 ZT20-23 7.5471082265 6.628501689 8.465714764