condition mean min max ZT0-3 110.869529 110.869529 110.869529 ZT4-7 96.55588399999999 96.55588399999999 96.55588399999999 ZT8-11 121.9899795 121.9899795 121.9899795 ZT12-15 117.884428 117.884428 117.884428 ZT16-19 157.065281 157.065281 157.065281 ZT20-23 144.653904 144.653904 144.653904