condition mean min max ZT0-3 43.61886 43.61886 43.61886 ZT4-7 68.3484605 68.3484605 68.3484605 ZT8-11 96.75467 96.75467 96.75467 ZT12-15 125.236119 125.236119 125.236119 ZT16-19 106.55561349999999 106.55561349999999 106.55561349999999 ZT20-23 66.370891 66.370891 66.370891