condition mean min max ZT0-3 14.131 14.131 14.131 ZT4-7 9.847010000000001 9.847010000000001 9.847010000000001 ZT8-11 9.47157 9.47157 9.47157 ZT12-15 11.28615 11.28615 11.28615 ZT16-19 17.55695 17.55695 17.55695 ZT20-23 15.928999999999998 15.928999999999998 15.928999999999998