condition mean min max ZT0-3 73.39030069500001 72.73666498 74.04393641000001 ZT4-7 80.520529585 79.68026525 81.36079392 ZT8-11 81.08258077166667 77.69442707666667 84.47073446666667 ZT12-15 72.32411218833333 70.29799342 74.35023095666666 ZT16-19 73.71470587833333 72.52676710666667 74.90264465 ZT20-23 72.93244654166668 69.60582193 76.25907115333334