condition mean min max ZT0-3 12.5333314075 4.152447275 20.91421554 ZT4-7 45.557719324999994 45.448558215 45.666880434999996 ZT8-11 60.046779664999995 46.34812923 73.7454301 ZT12-15 213.59461448000002 209.13881306 218.05041590000002 ZT16-19 215.311745275 187.9304052 242.69308535 ZT20-23 157.76960250000002 145.27413255 170.26507245000002