condition mean min max ZT0-3 0.0074262465 0.0 0.014852493 ZT4-7 0.00570695775 0.0 0.0114139155 ZT8-11 0.033401573 0.021006053 0.045797093 ZT12-15 0.041156911250000004 0.023216602000000003 0.059097220500000006 ZT16-19 0.03016951475 0.026920322000000003 0.0334187075 ZT20-23 0.00538093325 0.0 0.0107618665