condition mean min max ZT0-3 46.425399999999996 46.425399999999996 46.425399999999996 ZT4-7 33.70195 33.70195 33.70195 ZT8-11 34.39475 34.39475 34.39475 ZT12-15 36.22815 36.22815 36.22815 ZT16-19 53.5552 53.5552 53.5552 ZT20-23 54.17345 54.17345 54.17345