condition mean min max ZT0-3 62.2771939875 52.852099304999996 71.70228867 ZT4-7 15.89555367125 15.804104495 15.9870028475 ZT8-11 23.210929014999998 15.236886340000002 31.184971689999998 ZT12-15 39.410443605 36.76173853 42.05914868 ZT16-19 39.2548554125 36.702811685 41.80689914 ZT20-23 54.0099900525 49.891152074999994 58.12882803