condition mean min max ZT0-3 39.692750000000004 39.692750000000004 39.692750000000004 ZT4-7 41.6913 41.6913 41.6913 ZT8-11 25.04055 25.04055 25.04055 ZT12-15 23.6372 23.6372 23.6372 ZT16-19 27.38795 27.38795 27.38795 ZT20-23 37.8799 37.8799 37.8799