condition mean min max ZT0-3 584.25 584.25 584.25 ZT4-7 532.8 532.8 532.8 ZT8-11 448.15 448.15 448.15 ZT12-15 495.95000000000005 495.95000000000005 495.95000000000005 ZT16-19 505.45000000000005 505.45000000000005 505.45000000000005 ZT20-23 585.95 585.95 585.95