condition mean min max ZT0-3 7.696808786249999 3.331614675 12.0620028975 ZT4-7 79.39524873250001 55.684860345 103.10563712000001 ZT8-11 160.8751165625 137.359292275 184.39094085 ZT12-15 191.645642175 171.46093000000002 211.83035435 ZT16-19 119.13430148 105.64447791 132.62412505 ZT20-23 60.9808332125 50.504541249999996 71.457125175