condition mean min max ZT0-3 5.790067499999999 5.211914999999999 6.36822 ZT4-7 4.816504999999999 4.816504999999999 4.816504999999999 ZT8-11 1.48846 1.48846 1.48846 ZT12-15 0 0 0 ZT16-19 2.276795 2.276795 2.276795 ZT20-23 5.144905 5.144905 5.144905