condition mean min max ZT0-3 122.34044842 96.35902204 148.3218748 ZT4-7 174.865367575 159.70570990000002 190.02502525 ZT8-11 270.2761721 248.96505795 291.58728625 ZT12-15 511.94240605 483.03255260000003 540.8522595 ZT16-19 411.4749131 349.51073445 473.43909175 ZT20-23 218.312835 189.64320594999998 246.98246405000003