condition mean min max ZT0-3 188.37349999999998 188.37349999999998 188.37349999999998 ZT4-7 204.6085 204.6085 204.6085 ZT8-11 89.262 89.262 89.262 ZT12-15 47.7547 47.7547 47.7547 ZT16-19 41.4644 41.4644 41.4644 ZT20-23 65.09025 65.09025 65.09025