condition mean min max ZT0-3 0.2845156 0.1924055 0.3766257 ZT4-7 0.5398544999999999 0.5398544999999999 0.5398544999999999 ZT8-11 1.23654 1.23654 1.23654 ZT12-15 0 0 0 ZT16-19 1.21119 1.21119 1.21119 ZT20-23 0.989816 0.989816 0.989816