condition mean min max ZT0-3 29.90425588 13.55438576 46.254126 ZT4-7 114.75629074 101.33452803 128.17805345 ZT8-11 99.968925905 89.61035071 110.3275011 ZT12-15 42.597316785000004 40.83316164 44.36147193 ZT16-19 49.6415384275 46.40779931 52.875277545 ZT20-23 32.406384564999996 25.34297841 39.46979072