condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0477273255 0.0420308825 0.053423768499999996 ZT16-19 0.027524444500000002 0.025351868 0.029697021 ZT20-23 0.01946376525 0.014345051000000001 0.0245824795