condition mean min max ZT0-3 0.47764075 0.345043 0.6102385 ZT4-7 0.30483249999999995 0.30483249999999995 0.30483249999999995 ZT8-11 0.6524274999999999 0.6524274999999999 0.6524274999999999 ZT12-15 0 0 0 ZT16-19 0.772184 0.772184 0.772184 ZT20-23 0.4310235 0.4310235 0.4310235