condition mean min max ZT0-3 44.89702086825 11.0800686565 78.71397308 ZT4-7 1.0165697752499998 0.6943356095 1.3388039409999999 ZT8-11 5.233189163 2.892940988 7.573437338 ZT12-15 15.751154595000001 12.399197685 19.103111505 ZT16-19 15.5240264825 15.00528023 16.042772735 ZT20-23 23.0515913775 20.058148855 26.0450339