condition mean min max ZT0-3 95.517525 95.517525 95.517525 ZT4-7 88.75513699999999 88.75513699999999 88.75513699999999 ZT8-11 90.784004 90.784004 90.784004 ZT12-15 75.98559399999999 75.98559399999999 75.98559399999999 ZT16-19 70.226598 70.226598 70.226598 ZT20-23 52.370189499999995 52.370189499999995 52.370189499999995