condition mean min max ZT0-3 47.18055 47.18055 47.18055 ZT4-7 43.1714 43.1714 43.1714 ZT8-11 35.49105 35.49105 35.49105 ZT12-15 40.165350000000004 40.165350000000004 40.165350000000004 ZT16-19 44.2808 44.2808 44.2808 ZT20-23 43.8364 43.8364 43.8364