condition mean min max ZT0-3 2923.5 2923.5 2923.5 ZT4-7 2930.5 2930.5 2930.5 ZT8-11 3353.75 3353.75 3353.75 ZT12-15 3214.0 3214.0 3214.0 ZT16-19 2567.15 2567.15 2567.15 ZT20-23 2310.35 2310.35 2310.35