condition mean min max ZT0-3 166.76828 166.76828 166.76828 ZT4-7 112.211799 112.211799 112.211799 ZT8-11 121.7138075 121.7138075 121.7138075 ZT12-15 136.559766 136.559766 136.559766 ZT16-19 185.17333150000002 185.17333150000002 185.17333150000002 ZT20-23 188.365086 188.365086 188.365086