condition mean min max ZT0-3 282.75 282.75 282.75 ZT4-7 206.7 206.7 206.7 ZT8-11 210.25 210.25 210.25 ZT12-15 306.15 306.15 306.15 ZT16-19 329.65 329.65 329.65 ZT20-23 285.7 285.7 285.7