condition mean min max ZT0-3 77.63845 77.63845 77.63845 ZT4-7 45.661100000000005 45.661100000000005 45.661100000000005 ZT8-11 56.376599999999996 56.376599999999996 56.376599999999996 ZT12-15 92.5091 92.5091 92.5091 ZT16-19 122.8235 122.8235 122.8235 ZT20-23 113.1325 113.1325 113.1325