condition mean min max ZT0-3 1109.15 1109.15 1109.15 ZT4-7 1097.6 1097.6 1097.6 ZT8-11 1160.75 1160.75 1160.75 ZT12-15 1469.0 1469.0 1469.0 ZT16-19 1202.9499999999998 1202.9499999999998 1202.9499999999998 ZT20-23 1099.75 1099.75 1099.75