condition mean min max ZT0-3 92.746194 92.746194 92.746194 ZT4-7 191.3445085 191.3445085 191.3445085 ZT8-11 183.16805549999998 183.16805549999998 183.16805549999998 ZT12-15 195.551396 195.551396 195.551396 ZT16-19 104.26380599999999 104.26380599999999 104.26380599999999 ZT20-23 101.178997 101.178997 101.178997