condition mean min max ZT0-3 72.982434 72.982434 72.982434 ZT4-7 48.789381500000005 48.789381500000005 48.789381500000005 ZT8-11 67.854855 67.854855 67.854855 ZT12-15 66.393219 66.393219 66.393219 ZT16-19 75.0901815 75.0901815 75.0901815 ZT20-23 66.23154550000001 66.23154550000001 66.23154550000001