condition mean min max ZT0-3 62.282399999999996 62.282399999999996 62.282399999999996 ZT4-7 83.78195 83.78195 83.78195 ZT8-11 107.30199999999999 107.30199999999999 107.30199999999999 ZT12-15 41.7662 41.7662 41.7662 ZT16-19 62.60379999999999 62.60379999999999 62.60379999999999 ZT20-23 47.7787 47.7787 47.7787