condition mean min max ZT0-3 327.16049999999996 327.16049999999996 327.16049999999996 ZT4-7 356.46500000000003 356.46500000000003 356.46500000000003 ZT8-11 79.4922 79.4922 79.4922 ZT12-15 14.608 14.608 14.608 ZT16-19 42.536699999999996 42.536699999999996 42.536699999999996 ZT20-23 135.7935 135.7935 135.7935