condition mean min max ZT0-3 27.1017 27.1017 27.1017 ZT4-7 16.31795 16.31795 16.31795 ZT8-11 31.750349999999997 31.750349999999997 31.750349999999997 ZT12-15 20.2952 20.2952 20.2952 ZT16-19 40.80135 40.80135 40.80135 ZT20-23 34.1766 34.1766 34.1766