condition mean min max ZT0-3 77.2077754025 58.152369265 96.26318154 ZT4-7 34.1897060675 33.43651329 34.942898845 ZT8-11 46.6156432275 34.871719415 58.35956704 ZT12-15 51.10757427 49.56378938 52.65135916 ZT16-19 51.0579461825 48.784639215 53.331253149999995 ZT20-23 72.6001888875 64.14320255999999 81.057175215