condition mean min max ZT0-3 67.73670000000001 67.73670000000001 67.73670000000001 ZT4-7 56.15155 56.15155 56.15155 ZT8-11 20.4482 20.4482 20.4482 ZT12-15 32.9525 32.9525 32.9525 ZT16-19 47.42225 47.42225 47.42225 ZT20-23 75.16120000000001 75.16120000000001 75.16120000000001