condition mean min max ZT0-3 24.36205 24.36205 24.36205 ZT4-7 24.185299999999998 24.185299999999998 24.185299999999998 ZT8-11 20.4606 20.4606 20.4606 ZT12-15 17.767 17.767 17.767 ZT16-19 7.0026 7.0026 7.0026 ZT20-23 26.759549999999997 26.759549999999997 26.759549999999997