condition mean min max ZT0-3 483.361216 483.361216 483.361216 ZT4-7 325.618203 325.618203 325.618203 ZT8-11 343.693918 343.693918 343.693918 ZT12-15 337.63430400000004 337.63430400000004 337.63430400000004 ZT16-19 399.0654125 399.0654125 399.0654125 ZT20-23 416.92175 416.92175 416.92175