condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.03769475 0.03769475 0.03769475 ZT8-11 0.03765825 0.03765825 0.03765825 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0731772 0.0731772 0.0731772