condition mean min max ZT0-3 91.04201899916666 78.50761256333332 103.576425435 ZT4-7 70.58697945333333 64.45468860666666 76.7192703 ZT8-11 65.63308266 62.11208783 69.15407749 ZT12-15 75.94759987 71.55069016 80.34450958000001 ZT16-19 83.27664275666666 83.01932802333333 83.53395749 ZT20-23 98.97433226333334 96.36164615 101.58701837666666