condition mean min max ZT0-3 0.054072357249999994 0.0 0.10814471449999999 ZT4-7 2.13031389775 1.8591653069999998 2.4014624885 ZT8-11 3.98355003225 3.7737568085 4.193343256 ZT12-15 26.23818025325 17.5851810965 34.89117941 ZT16-19 20.90930928 17.58183605 24.236782509999998 ZT20-23 10.44846401925 8.6357530535 12.261174985