condition mean min max ZT0-3 37.902173 37.902173 37.902173 ZT4-7 40.7064855 40.7064855 40.7064855 ZT8-11 46.975238000000004 46.975238000000004 46.975238000000004 ZT12-15 42.739767 42.739767 42.739767 ZT16-19 51.2358715 51.2358715 51.2358715 ZT20-23 43.2801175 43.2801175 43.2801175