condition mean min max ZT0-3 1.3395725 1.3198349999999999 1.35931 ZT4-7 1.045105 1.045105 1.045105 ZT8-11 5.0686800000000005 5.0686800000000005 5.0686800000000005 ZT12-15 0 0 0 ZT16-19 6.02998 6.02998 6.02998 ZT20-23 3.092175 3.092175 3.092175