condition mean min max ZT0-3 122.45289137500001 94.298523 150.60725975000003 ZT4-7 76.97735344750001 59.253966225 94.70074067 ZT8-11 81.644524065 61.543557475 101.745490655 ZT12-15 42.698683700000004 20.99453752 64.40282988 ZT16-19 23.63740337 22.23133631 25.04347043 ZT20-23 24.910769700000003 20.417087690000002 29.40445171