condition mean min max ZT0-3 46.1388383575 30.45128002 61.826396695 ZT4-7 103.42687562249999 90.15459238 116.69915886499999 ZT8-11 244.1244172 186.73591464999998 301.51291975000004 ZT12-15 269.525957525 237.66005900000005 301.39185605 ZT16-19 134.61116097500002 113.571561 155.65076095 ZT20-23 101.81995986250001 97.240668775 106.39925095000001