condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0317303 0.0317303 0.0317303 ZT12-15 0.06731635 0.06731635 0.06731635 ZT16-19 0.02529075 0.02529075 0.02529075 ZT20-23 0.0 0.0 0.0