condition mean min max ZT0-3 118.02449999999999 118.02449999999999 118.02449999999999 ZT4-7 137.45749999999998 137.45749999999998 137.45749999999998 ZT8-11 140.627 140.627 140.627 ZT12-15 121.689 121.689 121.689 ZT16-19 102.23949999999999 102.23949999999999 102.23949999999999 ZT20-23 105.6035 105.6035 105.6035