condition mean min max ZT0-3 0.87173310625 0.0 1.7434662125 ZT4-7 0.847515741 0.7821340735 0.9128974085 ZT8-11 31.3069811895 4.0211032385 58.5928591405 ZT12-15 155.624583275 127.7375735 183.51159305 ZT16-19 191.59945625 186.41843 196.7804825 ZT20-23 134.0744198225 88.316652945 179.8321867