condition mean min max ZT0-3 25.640774999999998 24.998649999999998 26.282899999999998 ZT4-7 21.868499999999997 21.868499999999997 21.868499999999997 ZT8-11 19.71465 19.71465 19.71465 ZT12-15 0 0 0 ZT16-19 23.461350000000003 23.461350000000003 23.461350000000003 ZT20-23 25.59915 25.59915 25.59915