condition mean min max ZT0-3 155.8585 155.8585 155.8585 ZT4-7 130.62 130.62 130.62 ZT8-11 122.969 122.969 122.969 ZT12-15 138.606 138.606 138.606 ZT16-19 168.56 168.56 168.56 ZT20-23 158.337 158.337 158.337