condition mean min max ZT0-3 381.1 381.1 381.1 ZT4-7 550.6 550.6 550.6 ZT8-11 605.45 605.45 605.45 ZT12-15 542.45 542.45 542.45 ZT16-19 392.25 392.25 392.25 ZT20-23 357.45 357.45 357.45