condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.03231295 0.03231295 0.03231295 ZT12-15 0.0712826 0.0712826 0.0712826 ZT16-19 0.053948949999999996 0.053948949999999996 0.053948949999999996 ZT20-23 0.01342065 0.01342065 0.01342065