condition mean min max ZT0-3 0.051102 0.0 0.088587 ZT4-7 0.0175358 0.0175358 0.0175358 ZT8-11 0.0 0.0 0.0 ZT12-15 0.012691275 0.0 0.02538255 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0