condition mean min max ZT0-3 0.8018934999999999 0.7275615 0.8762254999999999 ZT4-7 1.20696 1.20696 1.20696 ZT8-11 0.9340759999999999 0.9340759999999999 0.9340759999999999 ZT12-15 0 0 0 ZT16-19 0.839276 0.839276 0.839276 ZT20-23 0.7686455 0.7686455 0.7686455