condition mean min max ZT0-3 0.5812534495 0.461031367 0.701475532 ZT4-7 1.1702587927499999 1.097380088 1.2431374974999998 ZT8-11 1.7644231745 1.352234763 2.176611586 ZT12-15 3.24364814525 2.580331529 3.9069647614999994 ZT16-19 1.3428194052499998 1.2197984654999998 1.465840345 ZT20-23 2.6808742690000003 2.3840553525 2.9776931855