condition mean min max ZT0-3 94.069718 94.069718 94.069718 ZT4-7 101.2427735 101.2427735 101.2427735 ZT8-11 87.07836 87.07836 87.07836 ZT12-15 82.9533415 82.9533415 82.9533415 ZT16-19 88.987566 88.987566 88.987566 ZT20-23 85.521744 85.521744 85.521744