condition mean min max ZT0-3 98.942301 98.942301 98.942301 ZT4-7 109.939902 109.939902 109.939902 ZT8-11 97.27916450000001 97.27916450000001 97.27916450000001 ZT12-15 92.7683715 92.7683715 92.7683715 ZT16-19 80.2087225 80.2087225 80.2087225 ZT20-23 73.70406399999999 73.70406399999999 73.70406399999999