condition mean min max ZT0-3 1.6172674999999999 1.4245649999999999 1.8099699999999999 ZT4-7 1.6309 1.6309 1.6309 ZT8-11 2.442835 2.442835 2.442835 ZT12-15 0 0 0 ZT16-19 3.380625 3.380625 3.380625 ZT20-23 2.144695 2.144695 2.144695