condition mean min max ZT0-3 90.882837695 81.71093472 100.05474067 ZT4-7 100.573879665 99.58103821 101.56672112000001 ZT8-11 173.30633245 134.84548775000002 211.76717715 ZT12-15 145.160371075 118.97245459999999 171.34828755 ZT16-19 97.5936833525 89.27120457999999 105.91616212500001 ZT20-23 75.68208158249999 73.57402487499999 77.79013829