condition mean min max ZT0-3 0.9330465 0.9330465 0.9330465 ZT4-7 0.7073695 0.7073695 0.7073695 ZT8-11 0.773013 0.773013 0.773013 ZT12-15 0.555802 0.555802 0.555802 ZT16-19 0.9665835 0.9665835 0.9665835 ZT20-23 0.8161130000000001 0.8161130000000001 0.8161130000000001