condition mean min max ZT0-3 1.08234802075 0.7209963495 1.4436996919999998 ZT4-7 9.974890689750001 6.7424053295 13.20737605 ZT8-11 18.918957347499997 18.234494025 19.60342067 ZT12-15 91.535869815 52.47235178 130.59938785 ZT16-19 104.09225692000001 102.889924295 105.29458954500001 ZT20-23 105.22097023 100.16544616 110.2764943