condition mean min max ZT0-3 37.89845 37.89845 37.89845 ZT4-7 35.265299999999996 35.265299999999996 35.265299999999996 ZT8-11 28.0108 28.0108 28.0108 ZT12-15 20.616 20.616 20.616 ZT16-19 44.29725 44.29725 44.29725 ZT20-23 39.778549999999996 39.778549999999996 39.778549999999996