condition mean min max ZT0-3 49.3022 49.3022 49.3022 ZT4-7 45.8738 45.8738 45.8738 ZT8-11 42.29805 42.29805 42.29805 ZT12-15 42.77805 42.77805 42.77805 ZT16-19 46.975 46.975 46.975 ZT20-23 53.88535 53.88535 53.88535