condition mean min max ZT0-3 0.63586725 0.579663 0.6920715 ZT4-7 0.582812 0.582812 0.582812 ZT8-11 1.332285 1.332285 1.332285 ZT12-15 0 0 0 ZT16-19 1.007404 1.007404 1.007404 ZT20-23 0.857846 0.857846 0.857846