condition mean min max ZT0-3 31.381299999999996 27.17795 35.584649999999996 ZT4-7 10.851775 10.851775 10.851775 ZT8-11 9.055605 9.055605 9.055605 ZT12-15 0 0 0 ZT16-19 23.90285 23.90285 23.90285 ZT20-23 28.959 28.959 28.959