condition mean min max ZT0-3 0.9112905 0.9112905 0.9112905 ZT4-7 0.88149725 0.88149725 0.88149725 ZT8-11 1.137423 1.137423 1.137423 ZT12-15 1.11225725 1.11225725 1.11225725 ZT16-19 0.9281775 0.9281775 0.9281775 ZT20-23 0.8051049166666666 0.8051049166666666 0.8051049166666666