condition mean min max ZT0-3 0.0863738 0.0 0.1727476 ZT4-7 0.0 0.0 0.0 ZT8-11 0.06862800000000001 0.06862800000000001 0.06862800000000001 ZT12-15 0.015827749999999998 0.0 0.031655499999999996 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0