condition mean min max ZT0-3 0.18609055824999998 0.164855502 0.2073256145 ZT4-7 0.0347108245 0.015301738999999998 0.05411991000000001 ZT8-11 6.72699830875 0.619292259 12.8347043585 ZT12-15 23.379796865000003 21.18644159 25.57315214 ZT16-19 9.24894426025 6.990529778499999 11.507358742000001 ZT20-23 1.9312945625000002 1.0515752855 2.8110138395