condition mean min max ZT0-3 24.93 23.0319 26.8281 ZT4-7 13.249849999999999 13.249849999999999 13.249849999999999 ZT8-11 11.9728 11.9728 11.9728 ZT12-15 0 0 0 ZT16-19 18.2723 18.2723 18.2723 ZT20-23 18.12745 18.12745 18.12745