condition mean min max ZT0-3 25.901899999999998 25.27025 26.533549999999998 ZT4-7 24.2501 24.2501 24.2501 ZT8-11 21.477800000000002 21.477800000000002 21.477800000000002 ZT12-15 0 0 0 ZT16-19 25.975749999999998 25.975749999999998 25.975749999999998 ZT20-23 25.2678 25.2678 25.2678