condition mean min max ZT0-3 0.0781715 0.03122385 0.12511915 ZT4-7 0.063715 0.063715 0.063715 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0