condition mean min max ZT0-3 0.018268028500000002 0.0 0.036536057000000004 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.04255639275 0.0 0.0851127855 ZT16-19 0.07245892875 0.06673955549999999 0.078178302 ZT20-23 0.0 0.0 0.0