condition mean min max ZT0-3 35.384837777499996 27.020988375 43.74868718 ZT4-7 23.9054883875 14.609771885 33.20120489 ZT8-11 57.83527657 45.590092084999995 70.080461055 ZT12-15 30.2994935125 18.17235917 42.426627855 ZT16-19 27.142063325000002 23.60580403 30.67832262 ZT20-23 41.6374219925 38.445648295000005 44.82919569