condition mean min max ZT0-3 0.09246238725 0.017925353999999998 0.1669994205 ZT4-7 0.8911030557499999 0.488988074 1.2932180375 ZT8-11 2.8260779645 2.1801041585 3.4720517705000002 ZT12-15 6.2997212065 4.6247724945 7.9746699185 ZT16-19 5.9583251635 5.6429666125 6.2736837145 ZT20-23 6.6895768755 6.387246447 6.991907304