condition mean min max ZT0-3 0.023625999999999998 0.023625999999999998 0.023625999999999998 ZT4-7 0.04846416666666666 0.04846416666666666 0.04846416666666666 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.042130499999999994 0.042130499999999994 0.042130499999999994