condition mean min max ZT0-3 42.09565 42.09565 42.09565 ZT4-7 29.3609 29.3609 29.3609 ZT8-11 21.411 21.411 21.411 ZT12-15 24.25645 24.25645 24.25645 ZT16-19 48.1774 48.1774 48.1774 ZT20-23 41.6479 41.6479 41.6479