condition mean min max ZT0-3 1.7118550000000001 1.605345 1.79695 ZT4-7 1.675845 1.675845 1.675845 ZT8-11 0.5278385 0.5278385 0.5278385 ZT12-15 0.45597075000000004 0.2000345 0.7119070000000001 ZT16-19 0.2717965 0.2717965 0.2717965 ZT20-23 0.5609445 0.5609445 0.5609445