condition mean min max ZT0-3 0.7615649999999999 0.420324 1.102806 ZT4-7 0.9842845 0.9842845 0.9842845 ZT8-11 0.42335449999999997 0.42335449999999997 0.42335449999999997 ZT12-15 0 0 0 ZT16-19 0.41340750000000004 0.41340750000000004 0.41340750000000004 ZT20-23 0.5524614999999999 0.5524614999999999 0.5524614999999999