condition mean min max ZT0-3 0.126139 0.126139 0.126139 ZT4-7 0.294473 0.294473 0.294473 ZT8-11 0.4405285 0.4405285 0.4405285 ZT12-15 0.34026350000000005 0.34026350000000005 0.34026350000000005 ZT16-19 1.159775 1.159775 1.159775 ZT20-23 0.38324749999999996 0.38324749999999996 0.38324749999999996