condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.050902637166666674 0.0 0.10180527433333335 ZT12-15 0.014915565833333333 0.0 0.029831131666666667 ZT16-19 0.011913511500000001 0.0 0.023827023000000003 ZT20-23 0.0 0.0 0.0