condition mean min max ZT0-3 465.2 465.2 465.2 ZT4-7 443.3 443.3 443.3 ZT8-11 492.75 492.75 492.75 ZT12-15 512.3 512.3 512.3 ZT16-19 595.3 595.3 595.3 ZT20-23 530.65 530.65 530.65