condition mean min max ZT0-3 109.3125 108.74600000000001 109.879 ZT4-7 120.5875 120.5875 120.5875 ZT8-11 152.28949999999998 152.28949999999998 152.28949999999998 ZT12-15 0 0 0 ZT16-19 174.75 174.75 174.75 ZT20-23 142.442 142.442 142.442