condition mean min max ZT0-3 42.9239245675 36.058174345000005 49.78967479 ZT4-7 30.646844837499998 28.826952455 32.46673722 ZT8-11 27.851297170000002 26.773086335000002 28.929508005000002 ZT12-15 33.4421751675 28.279111274999998 38.60523906 ZT16-19 49.99175104 42.16911465 57.81438743 ZT20-23 80.679436165 70.935170965 90.423701365