condition mean min max ZT0-3 18.8492 18.73695 18.96145 ZT4-7 17.9974 17.9974 17.9974 ZT8-11 38.69775 38.69775 38.69775 ZT12-15 0 0 0 ZT16-19 43.1731 43.1731 43.1731 ZT20-23 27.63775 27.63775 27.63775