condition mean min max ZT0-3 17696.5 17696.5 17696.5 ZT4-7 10594.8 10594.8 10594.8 ZT8-11 14471.75 14471.75 14471.75 ZT12-15 15055.3 15055.3 15055.3 ZT16-19 16624.8 16624.8 16624.8 ZT20-23 16049.199999999999 16049.199999999999 16049.199999999999