condition mean min max ZT0-3 0.19581833333333332 0.0 0.587455 ZT4-7 0.2722925 0.2722925 0.2722925 ZT8-11 0.3585965 0.3585965 0.3585965 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0