condition mean min max ZT0-3 0.39186933333333335 0.1923075 0.548146 ZT4-7 0.315123 0.315123 0.315123 ZT8-11 0.403107 0.403107 0.403107 ZT12-15 0.6593175 0.62102 0.6976150000000001 ZT16-19 0.3574925 0.3574925 0.3574925 ZT20-23 0.804461 0.804461 0.804461