condition mean min max ZT0-3 6.8226175 6.73596 6.909275 ZT4-7 4.086235 4.086235 4.086235 ZT8-11 3.26821 3.26821 3.26821 ZT12-15 0 0 0 ZT16-19 4.419205 4.419205 4.419205 ZT20-23 5.104290000000001 5.104290000000001 5.104290000000001