condition mean min max ZT0-3 0.9295575 0.9295575 0.9295575 ZT4-7 0.2760395 0.2760395 0.2760395 ZT8-11 0.690853 0.690853 0.690853 ZT12-15 0.6284155 0.6284155 0.6284155 ZT16-19 0.6229990000000001 0.6229990000000001 0.6229990000000001 ZT20-23 0.635278 0.635278 0.635278