condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.044142113 0.0 0.088284226 ZT8-11 0.037075565750000004 0.01990063 0.054250501500000006 ZT12-15 0.022314600249999997 0.0 0.044629200499999994 ZT16-19 0.022336222250000003 0.0 0.044672444500000005 ZT20-23 0.021209701499999997 0.020761049 0.021658353999999998