condition mean min max ZT0-3 32.58191395 28.13180246 37.03202544 ZT4-7 43.635431455 42.44342392 44.827438990000005 ZT8-11 31.414047292499998 28.494360129999997 34.333734455 ZT12-15 62.8809379125 45.76938522 79.992490605 ZT16-19 123.659224725 105.6333082 141.68514125 ZT20-23 211.434431975 171.7686246 251.10023934999998