condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0111685105 0.0 0.022337021 ZT8-11 0.0 0.0 0.0 ZT12-15 0.09634037416666667 0.06950095333333334 0.12317979500000001 ZT16-19 0.03467015016666667 0.0 0.06934030033333334 ZT20-23 0.0 0.0 0.0