condition mean min max ZT0-3 18.3466865175 16.959768005 19.73360503 ZT4-7 34.6304956675 24.303263719999997 44.957727614999996 ZT8-11 40.712674559999996 37.600070805 43.825278315 ZT12-15 47.1549749075 45.2604329 49.049516915 ZT16-19 38.034968075 34.638212025 41.431724125 ZT20-23 70.2099474625 49.057908929999996 91.361985995