condition mean min max ZT0-3 13.918 13.1952 14.640799999999999 ZT4-7 10.431585 10.431585 10.431585 ZT8-11 11.667549999999999 11.667549999999999 11.667549999999999 ZT12-15 0 0 0 ZT16-19 13.4723 13.4723 13.4723 ZT20-23 13.4234 13.4234 13.4234