condition mean min max ZT0-3 25.195075 25.16585 25.2243 ZT4-7 17.629550000000002 17.629550000000002 17.629550000000002 ZT8-11 17.696399999999997 17.696399999999997 17.696399999999997 ZT12-15 0 0 0 ZT16-19 28.2185 28.2185 28.2185 ZT20-23 18.76545 18.76545 18.76545