condition mean min max ZT0-3 66.76754632000001 63.88454745000001 69.65054519 ZT4-7 73.27647556 70.80236018333333 75.75059093666667 ZT8-11 69.76330141833333 66.08033222 73.44627061666667 ZT12-15 66.70496554 62.74047915 70.66945193000001 ZT16-19 77.91341630833332 72.02233040666667 83.80450221 ZT20-23 89.09427314333334 83.28155568333334 94.90699060333334