condition mean min max ZT0-3 0.031479675 0.02131465 0.0416447 ZT4-7 0.02171805 0.02171805 0.02171805 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.1256849 0.1256849 0.1256849 ZT20-23 0.10566875 0.10566875 0.10566875