condition mean min max ZT0-3 0.041326833333333333 0.0 0.1239805 ZT4-7 0.2791085 0.2791085 0.2791085 ZT8-11 0.45652550000000003 0.45652550000000003 0.45652550000000003 ZT12-15 0.456473275 0.21083805 0.7021085 ZT16-19 0.11900150000000001 0.11900150000000001 0.11900150000000001 ZT20-23 0.1309955 0.1309955 0.1309955