condition mean min max ZT0-3 0.2323975 0.2323975 0.2323975 ZT4-7 0.162685 0.162685 0.162685 ZT8-11 0.1851445 0.1851445 0.1851445 ZT12-15 0.735857 0.735857 0.735857 ZT16-19 0.7297395 0.7297395 0.7297395 ZT20-23 0.3521115 0.3521115 0.3521115