condition mean min max ZT0-3 154.03825 144.704 163.3725 ZT4-7 157.995 157.995 157.995 ZT8-11 350.2895 350.2895 350.2895 ZT12-15 0 0 0 ZT16-19 269.1835 269.1835 269.1835 ZT20-23 176.3245 176.3245 176.3245